owners manual dt125r

PRINTED ON RECYCLED PAPER PRINTED IN JAPAN

2000·12–0.4×1(E) !

OWNER’S MANUAL

3MB-28199-E7

DT125RYAMAHA MOTOR CO., LTD.

INTRODUCTION

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Welcome to the Yamaha world of motorcycling!

As the owner of a DT125R, you are benefiting from Yamaha’s vast experience in and newest tech-nology for the design and the manufacture of high-quality products, which have earned Yamaha areputation for dependability.

Please take the time to read this manual thoroughly, so as to enjoy all your DT125R’s advantages.The owner's manual does not only instruct you in how to operate, inspect and maintain your motorcy-cle, but also in how to safeguard yourself and others from trouble and injury.

In addition, the many tips given in this manual will help to keep your motorcycle in the best possiblecondition. If you have any further questions, do not hesitate to contact your Yamaha dealer.

The Yamaha team wishes you many safe and pleasant rides. So, remember to put safety first!

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IMPORTANT MANUAL INFORMA TION

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Particularly important information is distinguished in this manual by the following notations:

The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETYIS INVOLVED!

Failure to follow WARNING instructions could result in severe injury or death to themotorcycle operator, a bystander or a person inspecting or repairing the motorcycle.

A CAUTION indicates special precautions that must be taken to avoid damage tothe motorcycle.

A NOTE provides key information to make procedures easier or clearer.

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NOTE:

NOTE:8 This manual should be considered a permanent part of this motorcycle and should remain

with it even if the motorcycle is subsequently sold.8 Yamaha continually seeks advancements in product design and quality. Therefore, while this

manual contains the most current product information available at the time of printing, theremay be minor discrepancies between your motorcycle and this manual. If there is any ques-tion concerning this manual, please consult your Yamaha dealer.

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IMPORTANT MANUAL INFORMA TION

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PLEASE READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE OPERATINGTHIS MOTORCYCLE.

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DT125ROWNER’S MANUAL

© 2000 by Yamaha Motor Co., Ltd.1st Edition, December 2000

All rights reserved.Any reprinting or unauthorized usewithout the written permission of

Yamaha Motor Co., Ltd.is expressly prohibited.

Printed in Japan.

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TABLE OF CONTENTS

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GIVE SAFETY THE RIGHT OF WAY..................1-1

DESCRIPTION ....................................................2-1Left view............................................................2-1Right view .........................................................2-2Controls/Instruments.........................................2-3

INSTRUMENT AND CONTROL FUNCTIONS ....3-1Main switch .......................................................3-1Indicator lights...................................................3-1Oil level indicator circuit check..........................3-2Speedometer ....................................................3-3Tachometer.......................................................3-3Engine temperature gauge ...............................3-4Handlebar switches ..........................................3-4Clutch lever .......................................................3-5Shift pedal .........................................................3-5Front brake lever...............................................3-6Rear brake pedal ..............................................3-6Fuel tank cap ....................................................3-6Fuel (except for Switzerland and Austria) .........3-7Fuel (for Switzerland and Austria) ....................3-7Catalyzer (for Switzerland and Austria) ............3-8Two-stroke engine oil........................................3-9Fuel cock ..........................................................3-9Starter (choke) “1”.........................................3-10

Kick starter ......................................................3-11Steering lock ...................................................3-11Seat ................................................................3-12Helmet holder .................................................3-12Rear shock absorber adjustment....................3-13Rear carrier .....................................................3-14Note on handling of the Yamaha EnergyInduction System (Y.E.I.S.).............................3-14Y.P.V.S.(Yamaha Power Valve System)......................3-15Sidestand........................................................3-15Sidestand switch operation check ..................3-16

PRE-OPERATION CHECKS ...............................4-1Pre-operation check list ....................................4-1

OPERATION AND IMPORTANT RIDINGPOINTS................................................................5-1

Starting the engine............................................5-1Starting a warm engine.....................................5-3Shifting..............................................................5-4Recommended shift points(for Switzerland only) ........................................5-4Tips for reducing fuel consumption...................5-5Engine break-in.................................................5-5Parking..............................................................5-6

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PERIODIC MAINTENANCE AND MINORREPAIR................................................................6-1

Tool kit ..............................................................6-1Periodic maintenance and lubrication chart ......6-3Cowling removal and installation ......................6-6Cowling A..........................................................6-6Cowling B..........................................................6-7Cowling C .........................................................6-8Panel removal and installation..........................6-8Panel D .............................................................6-9Panel E .............................................................6-9Spark plug.......................................................6-10Transmission oil ..............................................6-11Cooling system ...............................................6-12Changing the coolant......................................6-13Air filter............................................................6-15Carburetor adjustment ....................................6-16Idle speed adjustment.....................................6-17Throttle cable free play adjustment.................6-17Tires................................................................6-18Wheels............................................................6-20Clutch lever free play adjustment ...................6-21Front brake lever free play adjustment ...........6-21Rear brake pedal height adjustment...............6-22Brake light switch adjustment .........................6-23Checking the front and rear brake pads .........6-23

Inspecting the brake fluid level .......................6-24Brake fluid replacement ..................................6-25Drive chain slack check ..................................6-25Drive chain slack adjustment ..........................6-26Drive chain lubrication ....................................6-26Cable inspection and lubrication.....................6-27Throttle cable and grip lubrication...................6-27Autolube pump adjustment .............................6-28Brake and shift pedal lubrication.....................6-28Brake and clutch lever lubrication...................6-28Sidestand lubrication ......................................6-29Front fork inspection .......................................6-29Steering inspection .........................................6-30Wheel bearings...............................................6-30Battery ............................................................6-31Fuse replacement ...........................................6-33Headlight bulb replacement ............................6-33Turn signal light bulb replacement..................6-35Tail/brake light bulb replacement....................6-35Supporting the motorcycle ..............................6-36Front wheel removal .......................................6-36Front wheel installation ...................................6-37Rear wheel removal ........................................6-38Rear wheel installation....................................6-39Troubleshooting ..............................................6-39Troubleshooting chart .....................................6-40

TABLE OF CONTENTS

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TABLE OF CONTENTS

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MOTORCYCLE CARE AND STORAGE .............7-1Care ..................................................................7-1Storage .............................................................7-4

SPECIFICATIONS...............................................8-1How to use the conversion table.......................8-5

CONSUMER INFORMATION..............................9-1Identification number records ...........................9-1Key identification number .................................9-1Vehicle identification number............................9-1Model label .......................................................9-2

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Motorcycles are fascinating vehicles, which can give you an unsurpassed feeling of power and free-dom. However, they also impose certain limits, which you must accept; even the best motorcycledoes not ignore the laws of physics.

Regular care and maintenance are essential for preserving your motorcycle’s value and operatingcondition. Moreover, what is true for the motorcycle is also true for the rider: good performancedepends on being in good shape. Riding under the influence of medication, drugs and alcohol is, ofcourse, out of the question. Motorcycle riders - more than car drivers - must always be at their mentaland physical best. Under the influence of even small amounts of alcohol, there is a tendency to takedangerous risks.

Protective clothing is as essential for the motorcycle rider as seat belts are for car drivers and passen-gers. Always wear a complete motorcycle suit (whether made of leather or tear-resistant syntheticmaterials with protectors), sturdy boots, motorcycle gloves and a properly fitting helmet. Optimum pro-tective wear, however, should not encourage carelessness. Though full-coverage helmets and suits,in particular, create an illusion of total safety and protection, motorcyclists will always be vulnerable.Riders who lack critical self-control run the risk of going too fast and are apt to take chances. This iseven more dangerous in wet weather. The good motorcyclist rides safely, predictably and defensively- avoiding all dangers, including those caused by others.

Enjoy your ride!

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QQ GIVE SAFETY THE RIGHT OF WAY

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DESCRIPTION

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2-1

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Left view

1. Headlight (page 6-33)2. Radiator cap (page 6-13)3. Fuel cock (page 3-9)4. Air filter (page 6-15)5. Coolant reservoir tank (page 6-13)6. Helmet holder (page 3-12)

7. Starter (choke) (page 3-10)8. Shift pedal (page 3-5, 5-4)9. Y.E.I.S. (page 3-14)

10. Y.P.V.S. (page 3-15)

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DESCRIPTION

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2-2

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Right view

11. Tool kit (page 6-1)12. Fuse (page 6-33)13. Engine oil tank (page 3-9)14. Rear brake pedal (page 3-6, 6-22)15. Rear shock absorber spring

preload adjusting nut (page 3-13)

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DESCRIPTION

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16. Clutch lever (page 3-5, 6-21)17. Left handlebar switches (page 3-4)18. Speedometer (page 3-3)19. Coolant temperature gauge (page 3-4)20. Tachometer (page 3-3)

21. Right handlebar switches (page 3-5)22. Front brake lever (page 3-6, 6-27)23. Throttle grip (page 6-17, 6-27)24. Fuel tank cap (page 3-6)25. Main switch (page 3-1)

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Controls/Instruments

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ONOFF

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Main switchThe main switch controls the ignitionand lighting systems. Its operation isdescribed below.

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ONElectrical circuits are switched on.The engine can be started. The keycannot be removed in this position.

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OFFAll electrical circuits are switched off.The key can be removed in this posi-tion.

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INSTRUMENT AND CONTROL FUNCTIONS

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High beam indicator light “ &”This indicator comes on when theheadlight high beam is used.

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Oil level indicator light “ 7”This indicator comes on when the oillevel is low. This light circuit can bechecked by the procedure on page 3-2.

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Do not run the motorcycle untilyou know it has sufficient engineoil.

NOTEEven if the oil is filled to the specifiedlevel, the indicator light may flickerwhen riding on a slope or during sud-den acceleration or deceleration, butthis is normal.

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Indicator lights

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Turn indicator light “ 5”This indicator flashes when the turnswitch is moved to the left or right.

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Neutral indicator light “N”This indicator comes on when thetransmission is in neutral.

1. Turn indicator light “5”2. High beam indicator light “&”3. Neutral indicator light “N”4. Oil level indicator light “7”

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Oil level indicator circuit check

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Turn the main switch to “ON”.

Put the transmission in neutral.

Oil level indicator lightdoes not come on.

Ask a Yamaha dealer toinspect electrical circuit.

Oil level indicator lightcomes on.

Oil level indicator lightdoes not come on.

Supply engine oil.

Shift into gear.

Engine oil level and electrical circuit are OK.Go ahead with riding.

Oil level indicator lightcomes on.

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1. Tachometer2. Red zone

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TachometerThis model is equipped with atachometer so the rider can monitorthe engine speed and keep it withinthe ideal power range.

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Do not operate in the red zone.Red zone: 10,500 r/min and above

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SpeedometerThe speedometer shows ridingspeed. This speedometer is equippedwith an odometer and trip odometer.The trip odometer can be reset to “0”with the reset knob. Use the tripodometer to estimate how far youcan ride on a tank of fuel. This infor-mation will enable you to plan fuelstops in the future.

1. Speedometer2. Odometer3. Trip odometer4. Reset knob

NOTE:(for German model equipped withspeed limiter only)This motorcycle is equipped with aspeed limiter which prevents it fromexceeding a top speed of 80 km/h.

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Turn signal switchTo signal a right-hand turn, push theswitch to “6”. To signal a left-handturn, push the switch to “4”. Oncethe switch is released it will return tothe center position. To cancel the sig-nal, push the switch in after it hasreturned to the center position.

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Horn switch “ *”Press the switch to sound the horn.

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1. Coolant temperature gauge2. Red zone

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Coolant temperature gaugeThis gauge indicates the coolant tem-perature when the main switch is on.The engine operating temperaturewill vary with changes in weather andengine load. If the needle points tothe red zone or higher, stop yourmotorcycle and let the engine cool.(See page 6-13 for details.)

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When the engine is overheated, donot continue riding.

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1. Lights switch2. Dimmer switch3. Turn signal switch4. Horn switch “*”

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Handlebar switches

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Lights switchTurning the light switch to “'”,turns on the auxiliary light, meterlights and taillight. Turning the lightswitch to “:”, turns the headlight onalso.

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Dimmer switchTurn the switch to “&” for the highbeam and to “%” for the low beam.

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1. Engine stop switch

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Engine stop switchThe engine stop switch is a safetydevice for use in an emergency suchas when the motorcycle overturns orif trouble occurs in the throttle sys-tem. Turn the switch to “#” to startthe engine. In case of emergency,turn the switch to “$” to stop theengine.

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Clutch leverThe clutch lever is located on the lefthandlebar. Pull the clutch lever to thehandlebar to disengage the clutch,and release the lever to engage theclutch. The lever should be pulledrapidly and released slowly forsmooth clutch operation.

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Shift pedalThis motorcycle is equipped with aconstant-mesh 6-speed transmission.The shift pedal is located on the leftside of the engine and is used incombination with the clutch whenshifting.

1. Shift pedalN. Neutral

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1. Clutch lever

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1. Front brake lever

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Front brake leverThe front brake lever is located onthe right handlebar. Pull it toward thehandlebar to apply the front brake.

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Rear brake pedalThe rear brake pedal is on the rightside of the motorcycle. Press downon the brake pedal to apply the rearbrake.

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Fuel tank capTo openInsert the key and turn it 1/4 turncounterclockwise. Turn the cap 1/3turn counterclockwise and remove itfrom the tank.

To closePut the cap in the filler neck and turnit 1/3 turn clockwise. Lock the cap byturning the key 1/4 turn clockwise,and remove the key.

1. Fuel tank cap2. Unlock3. Open

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NOTE:The tank cap cannot be reinstalledunless it is unlocked. The key mustremain in the cap until the cap isproperly installed and locked onto thefuel tank.

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Be sure the cap is properlyinstalled and locked in placebefore riding the motorcycle.

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1. Filler tube2. Fuel level

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Fuel(except for Switzerland andAustria)Make sure there is sufficient fuel inthe tank. Fill the fuel tank to the bot-tom of the filler tube as shown in theillustration.

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Do not overfill the fuel tank. Avoidspilling fuel on the hot engine. Donot fill the fuel tank above the bot -tom of the filler tube or it mayoverflow when the fuel heats uplater and expands.

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1. Filler tube2. Filling nozzle3. Leaf valve4. Fuel level

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Fuel(for Switzerland and Austria)Make sure there is sufficient fuel inthe tank. When refueling, be sure toinsert the filling nozzle into the fillerhole and fill the tank to the bottom ofthe filler tube as shown in the illustra-tion.

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Do not overfill the fuel tank. Avoidspilling fuel on the hot engine. Donot fill the fuel tank above the bot -tom of the filler tube or it mayoverflow when the fuel heats uplater and expands.

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Always wipe off spilled fuel imme -diately with a dry and clean softcloth. Fuel may deteriorate paintedsurfaces or plastic parts.

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NOTE:If knocking or pinging occurs, use adifferent brand of gasoline or higheroctane grade.

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Catalyzer(for Switzerland and Austria)This motorcycle is equipped with acatalytic converter in the exhaustchamber.

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The exhaust system is hot duringand directly after engine operation.Make sure the exhaust system hascooled down before making anyadjustment to or lubricating themotorcycle.

Recommended fuel:Regular unleaded gasoline with a research octanenumber of 91 or higher.

Fuel tank capacity:Total:

10.0 LReserve:

1.8 L

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The following must be observed toprevent a fire hazard or other dam -ages.88 Use only unleaded gasoline.

Use of leaded gasoline willcause unrepairable damage tothe catalytic converter.

88 Never park this motorcycle inan area that would cause a firehazard such as grass or othermaterials that may easily burn.

88 Do not allow the engine to idlefor very long.

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Fuel cockThe fuel cock supplies fuel from thetank to the carburetor while filtering italso.The fuel cock has three positions:

OFFWith the lever in this position, fuel willnot flow. Always return the lever tothis position when the engine is notrunning.

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ONFUEL

OFF

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1. Arrow mark positioned “OFF”

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Two-stroke engine oilMake sure there is sufficient two-stroke engine oil in the oil tank. Addthe recommended oil as necessary.

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1. Oil tank cap2. Stopper

Recommended oil:Yamalube 2 or 2-stroke engine oil (JASO FC grade or ISO EG-C, EG-D grade)

Oil quantity:1.2 L

OFF: closed position

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ONFUEL

RES

OFF

1ON

1. Arrow mark positioned “ON”

ONWith the lever in this position, fuelflows to the carburetor. Normal ridingis done with the lever in this position.

ON: normal position

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RESThis indicates reserve. If you run outof fuel while riding, move the lever tothis position. Fill the tank at the firstopportunity. Be sure to set the leverback to “ON” after refueling!

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Starter (choke) “ 1”Starting a cold engine requires a rich-er air-fuel mixture. A separate startercircuit supplies this mixture.Move in direction a to turn on thestarter (choke).Move in direction b to turn off thestarter (choke).

1. Starter (choke) “1”

OFF

ONFUEL

RES

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1. Arrow mark positioned “RES”

RES: reserve position

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Kick starterRotate the kick starter away from theengine. Push the starter down lightlywith your foot until the gears engage,then kick smoothly and forcefully tostart the engine. This model has aprimary-coupled kick starter so theengine can be started in any gear ifthe clutch is disengaged. However,shifting to neutral before starting isrecommended.

1. Kick starter

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Steering lockTo lock the steeringTurn the handlebars all the way tothe right and open the steering lockcover.Insert the key and turn it 1/8 turncounterclockwise. Then, push the keyin while turning the handlebars slight-ly to the left and turn the key 1/8 turnclockwise.Check that the steering is locked,remove the key and close the lockcover.

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To unlock the steeringInsert the key, push it in and turn it1/8 turn counterclockwise so that itmoves out. Then, release andremove the key.

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To install1. Insert the projections on the front

of the seat into the holders, thentighten the seat bolts.

2. Install the panels.

NOTE:Make sure that the seat is securelyfitted.

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Helmet holderTo open the helmet holder, insert thekey in the lock and turn it as shown.To lock the helmet holder, turn thekey to its original position.

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Never ride with a helmet in the hel -met holder. The helmet may hitobjects, causing loss of controland possibly an accident.

1. Open

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SeatTo remove

1. Remove panels D and E. (Seepage 6-9 for panel removal andinstallation procedures.)

2. Remove the seat bolts and liftthe seat upward.

1. Bolt (×2)

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Rear shock absorberadjustmentThis shock absorber is equipped witha spring preload adjuster. Adjustspring preload as follows.

1. Loosen the locknut.2. Turn the adjusting nut in direc-

tion a to increase spring preloadand in direction b to decreasespring preload. The spring pre-load is determined by the springset length.Shortening the spring set lengthincreases spring preload, length-ening the spring set lengthdecreases spring preload.

1. Locknut2. Adjusting nut

“A”

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Never attempt to turn an adjusterbeyond the maximum or minimumsetting.

Spring preload:Minimum (soft):

Distance “A” = 235 mmStandard:

Distance “A” = 230 mmMaximum (hard):

Distance “A” = 220 mm

3. Tighten the locknut to the speci-fied torque.

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Always tighten the locknut againstthe spring adjusting nut and tight -en the locknut to the specifiedtorque.

Tightening torque:Locknut:

55 Nm (5.5 m0kg)

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1. Air chamber2. Hose

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Note on handling of the Yamaha Energy InductionSystem (Y.E.I.S.)Handle the air chamber and hosewith special care. Improper installa-tion or damaged parts will result inpoor performance. Replace anycracked or damaged parts immedi-ately. No modification of this systemin any form can be made.

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Never attempt to modify theYamaha Energy Induction System.

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This shock absorber containshighly pressurized nitrogen gas.Read and understand the followinginformation before handling theshock absorber. The manufacturercannot be held responsible forproperty damage or personalinjury that may result from improp -er handling.88 Do not tamper with or attempt

to open the cylinder assembly.88 Do not subject the shock

absorber to an open flame orother high heat source. Thismay cause the unit to explodedue to excessive gas pres -sure.

88 Do not deform or damage thecylinder in any way. Cylinderdamage will result in poordamping performance.

88 Take your shock absorber to aYamaha dealer for any service.

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Rear carrierEW000032

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Do not exceed the load limit of 2 kg.

1. Rear carrier

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The Y.P.V.S. was set at theYamaha factory after many tests. Ifthe settings are disturbed bysomeone without sufficient techni -cal knowledge, poor engine perfor -mance and damage may result.

The Y.P.V.S. operation can be heardin the following instances:8 When the main switch is turned

on and the engine is started.8 When the engine stalls while the

main switch is on.EC000024

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If the Y.P.V.S. does not operate,ask a Yamaha dealer to inspect thevehicle.

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Y.P.V.S. (Yamaha Power Valve System)The Y.P.V.S. is a vital part of theengine and requires very sophisticat-ed adjustment. Adjustment should beleft to a Yamaha dealer who has theprofessional knowledge and experi-ence to do so.

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SidestandThis model is equipped with an igni-tion circuit cut-off system. The motor-cycle must not be ridden when thesidestand is down. The sidestand islocated on the left side of the frame.(Refer to page 5-1 for an explanationof this system.)

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If improper operation is noted,consult a Yamaha dealer immedi -ately.

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ENGINE WILL STALL.

SIDESTAND SWITCH IS OK.

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Sidestand switch operationcheckCheck the operation of the sidestandswitch against the information below.

TURN THE MAIN SWITCH TO “ON” AND

THE ENGINE STOP SWITCH TO “#”.

TRANSMISSION IS IN NEUTRAL AND

SIDESTAND IS DOWN.

PULL IN THE CLUTCH LEVER AND

PUT TRANSMISSION IN GEAR.

ENGINE WILL START.

KICK THE KICK STARTER.

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This motorcycle must not be oper -ated with the sidestand in thedown position. If the stand is notproperly retracted, it could contactthe ground and distract the opera -tor, resulting in a possible loss ofcontrol. Yamaha has designed intothis motorcycle a lockout systemto assist the operator in fulfillingthe responsibility of retracting thesidestand. Please check carefullythe operating instructions listedbelow and if there is any indicationof a malfunction, return the motor -cycle to a Yamaha dealer immedi -ately for repair.

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PRE-OPERATION CHECKS

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Owners are personally responsible for their vehicle’s condition. Your motorcycle’s vital functions can start to deterioratequickly and unexpectedly, even if it remains unused (for instance, if it is exposed to the elements). Any damage, fluidleak or loss of tire pressure could have serious consequences. Therefore, it is very important that, in addition to a thor-ough visual inspection, you check the following points before each ride.

EAU00340

PRE-OPERATION CHECK LIST

ITEM CHECKS PAGE

Front brake 9 Check operation, free play, fluid level and vehicle for fluid leakage.9 Fill with DOT 4 (or DOT 3) brake fluid if necessary.

3-6, 6-21 ~ 6-25Rear brake 9 Check operation, free play, fluid level and vehicle for fluid leakage.

9 Fill with DOT 4 (or DOT 3) brake fluid if necessary.

Clutch 9 Check operation, condition and free play. 3-5, 6-219 Adjust if necessary.

9 Check for smooth operation.Throttle grip and housing 9 Lubricate. 6-17, 6-27

9 Adjust throttle cable free play if necessary.

Engine oil 9 Check oil level. 3-99 Fill with oil if necessary.

Transmission oil 9 Check oil level. 6-11 ~ 6-129 Fill with oil if necessary.

Coolant 9 Check coolant level. 6-129 Fill with coolant if necessary.

Drive chain 9 Check chain slack and condition. 6-26 ~ 6-279 Adjust if necessary.

Wheels and tires 9 Check tire pressure, wear, damage and spoke tightness. 6-18 ~ 6-209 Tighten spokes if necessary.

Control and meter cable 9 Check for smooth operation. 6-279 Lubricate if necessary.

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ITEM CHECKS PAGE

Brake and shift pedal shafts 9 Check for smooth operation.

6-289 Lubricate if necessary.

Brake and clutch lever pivots 9 Check for smooth operation.9 Lubricate if necessary.

Sidestand pivot 9 Check for smooth operation. 6-299 Lubricate if necessary.

Chassis fasteners 9 Make sure that all nuts, bolts and screws are properly tightened. —9 Tighten if necessary.

Fuel tank 9 Check fuel level. 3-6 ~ 3-89 Fill with fuel if necessary.

Lights, signals and9 Check for proper operation. 6-33 ~ 6-35switches

Battery 9 Check fluid level. 6-31 ~ 6-329 Fill with distilled water if necessary.

NOTE:Pre-operation checks should be made each time the motorcycle is used. Such an inspection can be accomplished in avery short time; and the added safety it assures is more than worth the time involved.

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If any item in the Pre-Operation Check is not working properly, have it inspected and repaired before operatingthe motorcycle.

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EAU00373

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88 Before riding this motorcycle,become thoroughly familiarwith all operating controls andtheir functions. Consult aYamaha dealer regarding anycontrol or function that you donot thoroughly understand.

88 Never start your engine or letit run for any length of time ina closed area. The exhaustfumes are poisonous and cancause loss of consciousnessand death within a short time.Always operate your motorcy -cle in an area with adequateventilation.

88 Before starting out, always besure the sidestand is up.Failure to retract the sidestandcompletely can result in a seri -ous accident when you try toturn a corner.

EAU01177

Starting the engineNOTE:This motorcycle is equipped with anignition circuit cut-off system. Theengine can be started only under oneof the following conditions:8 The transmission is in neutral.8 The sidestand is up, the trans-

mission is in gear and the clutchis disengaged.

The motorcycle must not be riddenwhen the sidestand is down.

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Before going through the followingsteps, check the function of thesidestand switch. (Refer to page 3-16.)

EAU00372

OPERATION AND IMPORTANT RIDING POINTS

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IF TRANSMISSION IS IN NEUTRALAND SIDESTAND IS DOWN,

KICK THE KICK STARTER. ENGINE WILL START.

RETRACT SIDESTAND AND PUTTRANSMISSION IN GEAR.

MOTORCYCLE CAN BE RIDDEN.MOTORCYCLE CAN BE RIDDEN.

IF TRANSMISSION IS IN GEARAND SIDESTAND IS UP,

APPLY THE CLUTCH LEVER AND KICKTHE KICK STARTER.ENGINE WILL START.

TURN THE MAIN SWITCH TO "ON" ANDTHE ENGINE STOP SWITCH TO “#”.

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1. Turn the fuel cock to “ON”.2. Turn the main switch to “ON” and

the engine stop switch to “#”.3. Shift the transmission into neu-

tral.

NOTE:When the transmission is in neutral,the neutral indicator light should beon. If the light does not come on, aska Yamaha dealer to inspect it.

4. Turn on the starter (choke) andcompletely close the throttle grip.

5. Kick the kick starter to start theengine.

6. After starting the engine, movethe starter (choke) to the halfwayposition.

NOTE:For maximum engine life, neveraccelerate hard with a cold engine!

7. After the engine is warm, turn offthe starter (choke) completely.

NOTE:The engine is warm when it respondsnormally to the throttle with the starter(choke) turned off.

EAU01258

Starting a warm engineThe starter (choke) is not requiredwhen the engine is warm.

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See the “Engine break-in” sectionprior to operating the motorcyclefor the first time.

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EAU00423

ShiftingThe transmission lets you control theamount of power you have availableat a given speed for starting, acceler-ating, climbing hills, etc. The use ofthe shift pedal is shown in the illustra-tion.To shift into neutral, depress the shiftpedal repeatedly until it reaches theend of its travel, then raise the pedalslightly.

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88 Do not coast for long periodswith the engine off, and do nottow the motorcycle a long dis -tance. Even with gears in neu -tral, the transmission is onlyproperly lubricated when theengine is running. Inadequatelubrication may damage thetransmission.

88 Always use the clutch whenchanging gears. The engine,transmission, and driveline arenot designed to withstand theshock of forced shifting andcan be damaged by shiftingwithout using the clutch.

65432

1N

1

N. Neutral1. Shift pedal

EAU02937

Recommended shift points(for Switzerland only)The recommended shift points areshown in the table below.

Acceleration shift pointkm/h

1st → 2nd 202nd → 3rd 303rd → 4th 404th → 5th 505th → 6th 60

NOTE:When shifting two gears down from5th to 3rd, bring your motorcycle to aspeed of 35 km/h.

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EAU00424

Tips for reducing fuel consumptionYour motorcycle’s fuel consumptiondepends to a large extent on your rid-ing style. The following tips can helpreduce fuel consumption:8 Warm up the engine before rid-

ing.8 Turn off the starter (choke) as

soon as possible.8 Shift up swiftly and avoid high

engine speeds during accelera-tion.

8 Do not double-clutch or rev theengine while shifting down andavoid high engine speeds withno load on the engine.

8 Turn off the engine instead of let-ting it idle for an extended lengthof time, i.e. in traffic jams, at traf-fic lights or railroad crossings.

EAU00436

Engine break-inThere is never a more important peri-od in the life of your motorcycle thanthe period between zero and 1,000km. For this reason we ask that youcarefully read the following material.Because the engine is brand new,you must not put an excessive loadon it for the first 1,000 km. The vari-ous parts in the engine wear and pol-ish themselves to the correct operat-ing clearances. During this period,prolonged full throttle operation, orany condition which might result inexcessive heating of the engine,must be avoided.

EAU00453

0 ~ 500 kmAvoid operation above 6,000 r/min.Stop the engine and let it cool for 5 to10 minutes after every hour of opera-tion. Vary the speed of the motorcy-cle from time to time. Do not operateit at one set throttle position.500 ~ 1,000 kmAvoid prolonged operation above7,000 r/min. Rev the motorcyclefreely through the gears, but do notuse full throttle at any time.

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After 1,000 km of operation, besure to replace the transmissionoil.

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1,000 km and beyondFull throttle can be used.

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88 Never let engine speeds enterthe red zone.

88 If any engine trouble shouldoccur during the break-in peri -od, consult a Yamaha dealerimmediately.

EAU00458

ParkingWhen parking the motorcycle, stopthe engine and remove the ignitionkey. Turn the fuel cock to “OFF”whenever stopping the engine.

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The exhaust system is hot. Parkthe motorcycle in a place wherepedestrians or children are notlikely to touch the motorcycle. Donot park the motorcycle on a slopeor soft ground; the motorcyclemay overturn.

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Never park this motorcycle in anarea that would cause a fire haz -zard such as grass or other materi -als that may easily burn.

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EAU00462

PERIODIC MAINTENANCE AND MINOR REPAIR

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EAU00464

Periodic inspection, adjustment andlubrication will keep your motorcyclein the safest and most efficient condi-tion possible. Safety is an obligationof the motorcycle owner. The mainte-nance and lubrication schedule chartshould be considered strictly as aguide to general maintenance andlubrication intervals.YOU MUST TAKE INTO CONSIDER-ATION THAT WEATHER, TERRAIN,GEOGRAPHICAL LOCATIONS, ANDA VARIETY OF INDIVIDUAL USESALL TEND TO DEMAND THATEACH OWNER ALTER THIS TIMESCHEDULE TO SHORTER INTER-VALS TO MATCH THE ENVIRON-MENT. The most important points ofmotorcycle inspection, adjustment,and lubrication are explained in thefollowing pages.

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If you are not familiar with motor -cycle service, this work should bedone by a Yamaha dealer.

1

EAU00469

Tool kitThe service information included inthis manual is intended to provideyou, the owner, with the necessaryinformation for completing some ofyour own preventive maintenanceand minor repairs.The tools provided in the owner’s toolkit are to assist you in the perfor-mance of periodic maintenance.However, some other tools such as atorque wrench are also necessary toperform the maintenance correctly.

1. Tool kit

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NOTE:If you do not have necessary toolsrequired during a service operation,take your motorcycle to a Yamahadealer for service.

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Modifications to this motorcyclenot approved by Yamaha maycause loss of performance, andrender it unsafe for use. Consult aYamaha dealer before attemptingany changes.

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EAU03686

Periodic maintenance and lubrication chartNOTE:8 The annual checks must be performed every year, except if a kilometer-based maintenance is performed instead.8 From 30,000 km, repeat the maintenance intervals starting from 6,000 km.8 Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and

technical skills.

NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (× 1,000 km) ANNUAL

CHECK1 6 12 18 24

1 * Fuel line • Check fuel hoses for cracks or damage. √ √ √ √ √

2 Spark plug • Replace. √ √ √ √ √

3 Air filter element• Clean. √ √• Replace. √ √

4 * Battery • Check electrolyte level and specific gravity.• Make sure that the breather hose is properly routed. √ √ √ √ √

5 Clutch • Check operation.• Adjust. √ √ √ √ √

6 * Front brake• Check operation, fluid level and vehicle for fluid leakage.

(See NOTE on page 6-5.) √ √ √ √ √ √

• Replace brake pads. Whenever worn to the limit

7 * Rear brake• Check operation, fluid level and vehicle for fluid leakage.

(See NOTE on page 6-5.) √ √ √ √ √ √

• Replace brake pads. Whenever worn to the limit

8 * Brake hoses• Check for cracks or damage. √ √ √ √ √• Replace. (See NOTE on page 6-5.) Every 4 years

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9 * Wheels • Check runout, spoke tightness and for damage.• Tighten spokes if necessary. √ √ √ √

10 * Tires

• Check tread depth and for damage.• Replace if necessary.• Check air pressure.• Correct if necessary.

√ √ √ √

11 * Wheel bearings • Check bearing for looseness or damage. √ √ √ √

12 * Swingarm • Check operation and for excessive play. √ √ √ √

13 Drive chain• Check chain slack.• Make sure that the rear wheel is properly aligned.• Clean and lubricate.

Every 500 km and after washingthe motorcycle or riding in the rain.

14 * Steering bearings• Check bearing play and steering for roughness. √ √ √ √ √• Lubricate with lithium-soap-based grease. Every 24,000 km

15 * Chassis fasteners • Make sure that all nuts, bolts and screws are properly tightened. √ √ √ √ √

16 Sidestand • Check operation.• Lubricate. √ √ √ √ √

17 * Sidestand switch • Check operation. √ √ √ √ √ √

18 * Front fork • Check operation and for oil leakage. √ √ √ √

19 *Shock absorber assembly • Check operation and shock absorber for oil leakage. √ √ √ √

20 *Rear suspension relay arm and connecting arm pivoting points

• Check operation. √ √ √ √


CHECK1 6 12 18 24

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EAU03884

NOTE:8 The air filter needs more frequent service if you are riding in unusually wet or dusty areas.8 Hydraulic brake service9 Regularly check and, if necessary, correct the brake fluid level. 9 Every two years replace the internal components of the brake master cylinders and calipers, and change the

brake fluid.9 Replace the brake hoses every four years and if cracked or damaged.

21 * Carburetor • Check starter (choke) operation.• Adjust engine idling speed. √ √ √ √ √ √

22 * Autolube pump • Check operation.• Bleed if necessary. √ √ √ √

23 Transmission oil• Check oil level. √ √ √ √ √ √• Change. √ √

24 * Cooling system• Check coolant level and vehicle for coolant leakage. √ √ √ √ √• Change. Every 3 years

25 *Front and rear brake switches • Check operation. √ √ √ √ √ √

26 Moving parts and cables • Lubricate. √ √ √ √ √

27 *Lights, signals and switches

• Check operation.• Adjust headlight beam. √ √ √ √ √ √


CHECK1 6 12 18 24

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12 1 1

EAU01065

Cowling removal andinstallationThe cowlings indicated in the illustra-tion need to be removed to performsome of the maintenance describedin this chapter.Refer to this section each time acowling has to be removed or rein-stalled.

1. Cowling A2. Cowling B

1. Cowling C 1. Screw (×2)

EAU01534*

Cowling ATo removeRemove the screws and pull outwardas shown.

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1. Screw (×3)

EAU01534*

Cowling BTo removeRemove the screws and pull outwardas shown.

To installPlace in the original position andinstall the screws.


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EAU01534*

Cowling CTo removeRemove the screws and pull outwardas shown.

1. Screw (×3) 1. Panel D


EAU01122

Panel removal and installationThe panels illustrated need to beremoved to perform some of themaintenance described in this chap-ter.

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Refer to this section each time apanel has to be removed or rein-stalled.

EAU01535*

Panel DTo removeRemove the screw and pull outwardas shown.

To installPlace the panel in the original posi-tion and install the screw.

EAU01535*

Panel ETo removeRemove the screw and pull outwardas shown.

To installPlace the panel in the original posi-tion and install the screw.

1. Panel E 1. Screw 1. Screw

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EAU01833

Spark plugRemoval

1. Remove the spark plug cap.

2. Use the spark plug wrench in thetool kit to remove the spark plugas shown.

InspectionThe spark plug is an importantengine component and is easy toinspect. The condition of the sparkplug can indicate the condition of theengine.The ideal color on the white insulatoraround the center electrode is amedium-to-light tan color for a motor-cycle that is being ridden normally.Do not attempt to diagnose suchproblems yourself. Instead, take themotorcycle to a Yamaha dealer. Youshould periodically remove andinspect the spark plug because heatand deposits will cause any sparkplug to slowly break down and erode.If electrode erosion becomes exces-sive, or if carbon and other depositsare excessive, you should replacethe spark plug with the specified plug.

1. Spark plug cap

Specified spark plug:BR9ES (NGK)BR8ES (NGK) (CH, A only)

1

1. Spark plug wrench

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Spark plug gap:0.7 ~ 0.8 mm

Tightening torque:Spark plug:

20 Nm (2.0 m0kg)

13

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EAU03109

Transmission oilOil level inspection

1. Place the motorcycle on a levelplace and hold it in an uprightposition. Warm up the engine forseveral minutes.

NOTE:Be sure the motorcycle is positionedstraight up when checking the oillevel. A slight tilt toward the side canresult in false readings.

1. Level window2. Maximum level3. Minimum levelInstallation

1. Measure the electrode gap witha wire thickness gauge and, ifnecessary, adjust the gap tospecification.

2. Clean the gasket surface. Wipeoff any grime from the threads.

3. Install the spark plug and tightenit to the specified torque.

1

1. Spark plug gap

NOTE:If a torque wrench is not availablewhen you are installing a spark plug,a good estimate of the correct torqueis 1/4 to 1/2 turn past finger tight.Have the spark plug tightened to thespecified torque as soon as possible.

4. Install the spark plug cap.

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5. Fill the engine with sufficient oilto reach the specified level.Install the oil filler cap and tight-en it.

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Do not put in any chemical addi -tives. Transmission oil also lubri -cates the clutch and additivescould cause clutch slippage.

6. Start the engine and warm up fora few minutes. While warmingup, check for oil leakage. If oilleakage is found, stop the engineimmediately and check forcause.

Recommended oil:See page 8-1.

Oil quantity:Total amount: 0.8 LPeriodic oil change: 0.75 L

1

Transmission oil replacement1. Warm up the engine for several

minutes.2. Stop the engine. Place an oil pan

under the engine to catch the oiland remove the oil filler cap.

3. Remove the drain bolt and drainthe oil.

4. Install the drain bolt and tighten itto the specified torque.

1. Drain bolt

Tightening torque:Drain bolt:

15 Nm (1.5 m0kg)

1

2. With the engine stopped, checkthe oil level through the levelwindow located at the right sidecrankcase cover.

NOTE:Wait a few minutes until the oil levelsettles before checking.

3. The oil level should be betweenthe maximum and minimum levelon the level window. If the levelis low, add sufficient oil to raise itto the specified level.

1. Oil filler cap

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EAU01808

Cooling system1. Remove panel D. (See page 6-9

for panel removal and installationprocedures.)

2. Check the coolant level in thereservoir tank when the engine iscold as the coolant level will varywith engine temperature. Thecoolant level should be betweenthe maximum and minimummarks.

3. If the level is low, add coolant ordistilled water to raise it to thespecified level.

4. Install the panel.

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Hard water or salt water is harmfulto the engine. You may use dis -tilled water if you can’t get softwater.

NOTE:If water is added, have a Yamahadealer check the antifreeze content ofthe coolant as soon as possible.

If your motorcycle overheats, seepage 6-41 for details.

2

1

1. Maximum level mark2. Minimum level mark

EAU03101

Changing the coolant1. Put the motorcycle on a level

place.2. Remove cowling C and panel D.

(See page 6-8 ~ 6-9 for cowlingand panel removal and installa-tion procedures.)

3. Remove the radiator cap stopperbolt and the radiator cap.

1

2

1. Stopper bolt2. Radiator cap

Reservoir tank capacity:0.35 L

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8. Install the reservoir tank hose.9. Pour the recommended coolant

into the radiator until it is full.

Recommended antifreeze:High quality ethylene glycol antifreeze containing corrosion inhibitors for aluminum engines.

Antifreeze and water mixing ratio:1:1

Total amount:1.05 L

Reservoir tank capacity:0.35 L

4. Place a container under theengine and remove the coolantdrain bolt.

5. Disconnect the reservoir tankhose on the reservoir tank sideand drain the coolant from thereservoir tank.

6. After draining the coolant, thor-oughly flush the cooling systemwith clean tap water.

7. Replace the coolant drain boltwasher if it is damaged and tight-en the coolant drain bolt to thespecified torque.

1

1

3

2

1. Drain bolt 1. Reservoir tank hose2. Maximum level mark3. Minimum level mark

Tightening torque:Coolant drain bolt:

10 Nm (1.0 m0kg)

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Hard water or salt water is harmfulto the engine. You may use dis -tilled water if you can’t get softwater.

10. Install the radiator cap.11. Run the engine several minutes.

Stop the engine and recheck thecoolant level in the radiator. If itis low, add more coolant until itreaches the top of the radiator.

12. Install the radiator cap stopperbolt.

13. Fill the reservoir tank withcoolant up to maximum level.

14. Install the reservoir tank cap andcheck for coolant leakage.

NOTE:If any leakage is found, ask aYamaha dealer to inspect the coolingsystem.

15. Install the cowling and the panel.

1

EAU03107

Air filterThe air filter should be cleaned at thespecified intervals. It should becleaned more frequently when ridingin unusually wet or dusty areas.

1. Remove panel D. (See page 6-9for panel removal and installationprocedures.)

2. Remove the air filter case byremoving the screws.

1. Screw (×3)

3. Remove the air filter from thecase.

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6. Insert the air filter guide into theair filter and install it in the case.

7. Install the air filter case coverand panel by installing thescrews.

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88 Make sure the air filter is prop -erly seated in the air filtercase.

88 The engine should never berun without the air filterinstalled. Excessive pistonand/or cylinder wear mayresult.

EAU00629

Carburetor adjustmentThe carburetor is a vital part of theengine and requires very sophisticat-ed adjustment. Most adjustmentsshould be left to a Yamaha dealerwho has the professional knowledgeand experience to do so. However,the following may be serviced by theowner as part of routine mainte-nance.

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The carburetor was set at theYamaha factory after many tests. Ifthe settings are changed, poorengine performance and damagemay result.

4. Remove the air filter elementfrom its guide and clean it withsolvent. After cleaning, removethe remaining solvent by squeez-ing the element.

5. Apply recommended oil to theentire surface of the element andsqueeze out the excess oil. Itshould be wet but not dripping.

1 2

1. Guide2. Filter element

Recommended oil:Engine oil

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b a

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EAU00632

Idle speed adjustment1. Start the engine and warm it up

for a few minutes at approxi-mately 1,000 to 2,000 r/min.Occasionally rev the engine to4,000 to 5,000 r/min. The engineis warm when it quickly respondsto the throttle.

2. Set the idle to the specifiedengine speed by adjusting thethrottle stop screw. Turn thescrew in direction a to increaseengine speed and in direction bto decrease engine speed.

1. Throttle stop screw

NOTE:If the specified idle speed cannot beobtained by performing the aboveadjustment, consult a Yamaha deal-er.

Standard idle speed:1,250 ~ 1,450 r/min a

EAU00634

Throttle cable free playadjustmentNOTE:Before checking the throttle cablefree play, the engine idling speedshould be adjusted.

Adjust the throttle cable by turningthe adjusting nut so that specifiedfree play at the thrott le grip isobtained.

a. Free play

Free play:3 ~ 5 mm

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EAU00652

TiresTo ensure maximum performance,long service and safe operation, notethe following:Tire air pressureAlways check and adjust the tirepressure before operating the motor-cycle.

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Tire inflation pressure should bechecked and adjusted when thetemperature of the tire equals theambient air temperature. Tire infla -tion pressure must be adjustedaccording to total weight of cargo,rider, passenger, and accessories(fairing, saddlebags, etc. ifapproved for this model), and vehi -cle speed.

* Load is the total weight of cargo, rider, passengerand accessories.

Maximum load*180 kg

178 kg (CH, A only)

Cold tire pressure Front Rear

125 kPa 150 kPaUp to 90 kg (1.25 kg/cm2, (1.50 kg/cm2,

1.25 bar) 1.50 bar)

90 kg load ~150 kPa 175 kPa

Maximum load*(1.50 kg/cm2, (1.75 kg/cm2,

1.50 bar) 1.75 bar)

125 kPa 150 kPaOff-road riding (1.25 kg/cm2, (1.50 kg/cm2,

1.25 bar) 1.50 bar)

1. Loosen the locknut.2. Turn the adjusting nut in direc-

tion a to increase free play andin direction b to decrease freeplay.

3. Tighten the locknut.

21

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Proper loading of your motorcycleis important for several character -istics of your motorcycle, such ashandling, braking, performanceand safety. Do not carry looselypacked items that can shift.Securely pack your heaviest itemsclose to the center of the motorcy -cle, and distribute the weight even -ly from side to side. Properlyadjust the suspension for yourload, and check the condition andpressure of your tires. NEVEROVERLOAD YOUR MOTORCYCLE.Make sure the total weight of thecargo, rider, passenger, andaccessories (fairing, saddlebags,etc. if approved for this model)does not exceed the maximumload of the motorcycle. Operationof an overloaded motorcycle couldcause tire damage, an accident, oreven injury.

Tire inspectionAlways check the tires before operat-ing the motorcycle. If center treaddepth reaches the limit as shown, ifthe tire has a nail or glass fragmentsin it, or if the side wall is cracked,contact a Yamaha dealer immediate-ly and have the tire replaced.

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After extensive tests, the tiresmentioned below have beenapproved by Yamaha Motor Co.,Ltd. for this model. No guaranteefor handling characteristics can begiven if tire combinations otherthan what is approved are used onthis motorcycle. The front and reartires should be of the same manu -facture and design.

1

2

1. Tread depth2. Side wall

Manufacturer Size Type

BRIDGESTONE 2.75-21 45P TW25

FRONT

Manufacturer Size Type

BRIDGESTONE 4.10-18 59P TW44

REAR

Minimum tire tread1.6 mm

depth (front and rear)

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EAU00685

WheelsTo ensure maximum performance,long service, and safe operation, notethe following:8 Always inspect the wheels

before a ride. Check for cracks,bends or warpage of the wheel.Be sure the spokes are tight andundamaged. If any abnormalcondition exists in a wheel, con-sult a Yamaha dealer. Do notattempt even small repairs to thewheel. If a wheel is deformed orcracked, it must be replaced.

8 Tires and wheels should be bal-anced whenever either one ischanged or replaced. Failure tohave a wheel balanced canresult in poor performance,adverse handling characteristics,and shortened tire life.

8 Ride at moderate speeds afterchanging a tire since the tire sur-face must first be broken in for itto develop its optimal character-istics.

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88 Operating the motorcycle withexcessively worn tiresdecrease riding stability andcan lead to loss of control.Have excessively worn tiresreplaced by a Yamaha dealerimmediately. Brakes, tires, andrelated wheel parts replace -ment should be left to aYamaha Service Technician.

88 Patching a punctured tube isnot recommended. If it isabsolutely necessary to do so,use great care and replace thetube as soon as possible witha good quality replacement.

NOTE:These limits may be different by regu-lation from country to country. If so,conform to the limits specified by theregulations of your own country.

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EAU00694

Clutch lever free playadjustmentThe clutch lever free play should beadjusted to 10 ~ 15 mm.

1. Loosen the locknut at the clutchlever.

2. Turn the adjusting bolt at theclutch lever in direction a toincrease free play or in directionb to decrease free play.

3. Tighten the locknut at the clutchlever.

If the specified free play cannot beobtained, proceed with the followingsteps.

1. Locknut2. Adjusting bolt3. Free play

a

b

1 2

4. Loosen the locknut at the clutchlever.

5. Turn the adjusting bolt at theclutch lever in direction a toloosen the cable.

6. Loosen the locknut at thecrankcase side.

7. Turn the adjusting nut at thecrankcase in direction a toincrease free play or in directionb to decrease free play.

8. Tighten the locknut at thecrankcase and the clutch lever.


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b

a

EAU00696

Front brake lever free playadjustmentThe free play at the front brake levershould be 2 ~ 5 mm.

1. Loosen the locknut.2. Turn the adjusting bolt in direc-

tion a to increase free play or indirection b to decrease freeplay.

3. After adjusting, tighten the lock-nut.

1. Locknut2. Adjusting bolt3. Free play

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88 Check the brake lever freeplay. Be sure the brake isworking properly.

88 A soft or spongy feeling in thebrake lever can indicate thepresence of air in the brakesystem. This air must beremoved by bleeding the brakesystem before the motorcycleis operated. Air in the systemwill cause greatly diminishedbraking capability and canresult in loss of control and anaccident. Have a Yamaha deal -er inspect and bleed the sys -tem if necessary.

a

1

EAU00712

Rear brake pedal heightadjustmentThe top of the brake pedal should bepositioned 15 mm below the top ofthe footrest. If not, ask a Yamahadealer to adjust it.

1. Footresta. Pedal height

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A soft or spongy feeling in thebrake pedal can indicate the pres -ence of air in the brake system.This air must be removed bybleeding the brake system beforethe motorcycle is operated. Air inthe system will cause greatlydiminished braking capability andcan result in loss of control and anaccident. Have a Yamaha dealerinspect and bleed the system ifnecessary.

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EAU00713

Brake light switchadjustmentThe rear brake light switch is activat-ed by the brake pedal and is properlyadjusted when the brake light comeson just before braking takes effect.To adjust the rear brake light switch,hold the switch body so it does notrotate while turning the adjusting nut.Turn the adjusting nut in direction ato make the brake light come on earli-er.Turn the adjusting nut in direction bto make the brake light come onlater.

ba

1

2

1. Brake light switch2. Adjusting nut

EAU00717

Checking the front and rearbrake padsCheck the brake pads for damageand wear. If the thickness is less thanthe specified value, have a Yamahadealer replace the pads.

1

1. Wear limit: 0.8 mm

FRONT

1

1. Wear limit: 0.8 mm

REAR

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8 Use only the designated qualitybrake fluid. Otherwise, the rub-ber seals may deteriorate, caus-ing leakage and poor brake per-formance.

NOTE:If DOT 4 is not available, DOT 3 canbe used.

EAU00732

Inspecting the brake fluidlevelInsufficient brake fluid may let airenter the brake system, possiblycausing the brakes to become inef-fective.Before riding, check that the brakefluid is above the minimum level andfill when necessary.Observe these precautions:8 When checking the fluid level,

make sure the top of the mastercylinder is level by turning thehandlebars.

1

1. Minimum level mark

FRONT

1

1. Minimum level mark

REAR

Recommended brake fluid:DOT 4

8 Refill with the same type of brakefluid. Mixing fluids may result in aharmful chemical reaction andlead to poor brake performance.

8 Be careful that water does notenter the master cylinder whenrefilling. Water will significantlylower the boiling point of the fluidand may result in vapor lock.

8 Brake fluid may deteriorate paint-ed surfaces or plastic parts.Always clean up spilled fluidimmediately.

8 Have a Yamaha dealer checkthe cause if the brake fluid levelgoes down.

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EAU00742

Brake fluid replacementThe brake fluid should be replacedonly by trained Yamaha service per-sonnel. Have the Yamaha dealerreplace the following componentsduring periodic maintenance or whenthey are damaged or leaking:8 oil seals (every two years)8 brake hoses (every four years)

EAU00744*

Drive chain slack check

NOTE:Spin the wheel several times and findthe tightest position of the chain.Check and/or adjust the chain slackwhile it’s in this tightest position.

a

a. Chain slack

To check the chain slack the motor-cycle must be held straight up withboth wheels on the ground and with-out rider. Check the slack at the posi-tion shown in the illustration. Normalslack is approximately 25 ~ 40 mm. Ifthe slack exceeds 40 mm, adjust it.

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EC000096

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Too little chain slack will overloadthe engine and other vital parts.Keep the slack within the specifiedlimits.

3. Tighten the wheel axle nut to thespecified torque.

EAU01533*

Drive chain slack adjustment1. Loosen the wheel axle nut.2. To tighten the chain, turn the

chain adjusting plates in directiona. To loosen the chain, turn thechain adjusting plates in directionb and push the wheel forward.Turn each chain adjusting plateto exactly the same position tomaintain correct axle alignment.

ab

2

1

1. Wheel axle nut2. Chain adjusting plate Tightening torque:

Wheel axle nut:90 Nm (9.0 m0kg)

EAU03006

Drive chain lubricationThe chain consists of many partswhich work with each other. If thechain is not maintained properly, itwill wear out quickly. Therefore, thechain must be serviced regularly.This service is especially necessarywhen riding in dusty areas. Thismotorcycle is equipped with a sealedtype chain. Steam cleaning, high-pressure washers, and solvents candamage the drive chain, so do notuse these for cleaning it. Use onlykerosene to clean the drive chain.Wipe it dry, and thoroughly lubricate itwith SAE 30 ~ 50W motor oil. Do notuse any other lubricants on the drivechain. They may contain solventsthat could damage the sealed chain.

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Be sure to oil the chain after wash -ing the motorcycle or riding in therain.

EAU02962

Cable inspection and lubrication

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Damage to the outer housing ofcables may lead to internal rustingand interfere with the cable move -ment. Replace damaged cables assoon as possible to prevent unsafeconditions.

Lubricate the cables and cable ends.If a cable does not operate smoothly,ask a Yamaha dealer to replace it.

EAU00773

Throttle cable and griplubricationThe throttle twist grip assemblyshould be greased at the time thatthe cable is lubricated, since the gripmust be removed to get at the end ofthe throttle cable. After removing thescrews, hold the end of the cable upin the air and put in several drops oflubricant. With the throttle grip disas-sembled, coat the metal surface ofthe grip assembly with a suitable all-purpose grease.

Recommended lubricant:Engine oil

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EAU00774

Autolube pump adjustmentThe autolube pump is a vital part ofthe engine and requires very sophisti-cated adjustment.Adjusting should be left to a Yamahadealer who has the professionalknowledge and experience to do so.

EAU02984

Brake and shift pedal lubricationLubricate the pivoting parts.

EAU02985

Brake and clutch lever lubricationLubricate the pivoting parts.



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EAU02986

Sidestand lubricationLubricate the sidestand pivoting pointand metal-to-metal contact surfaces.Check that the sidestand moves upand down smoothly.

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If the sidestand does not movesmoothly, consult a Yamaha deal -er.


EAU02939

Front fork inspectionVisual check

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Securely support the motorcycleso there is no danger of it fallingover.

Check for scratches or damage onthe inner tube and excessive oil leak-age from the front fork.

Operation check1. Place the motorcycle on a level

place.2. Hold the motorcycle in an upright

position and apply the frontbrake.

3. Push down hard on the handle-bars several times and check ifthe fork rebounds smoothly.

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If any damage or unsmooth move -ment is found with the front fork,consult a Yamaha dealer.

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EAU00794

Steering inspectionPeriodically inspect the condition ofthe steering. Worn out or loose steer-ing bearings may be dangerous.Place a stand under the engine toraise the front wheel off the ground.Hold the lower end of the front forksand try to move them forward andbackward. If any free play can be felt,ask a Yamaha dealer to inspect andadjust the steering. Inspection is eas-ier if the front wheel is removed.

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Securely support the motorcycleso there is no danger of it fallingover.

EAU01144

Wheel bearingsIf there is play in the front or rearwheel hub or if the wheel does notturn smoothly, have a Yamaha dealerinspect the wheel bearings.

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EAU01071

BatteryCheck the level of the battery elec-trolyte and make sure that the termi-nals are tight.Fill with distilled water if the elec-trolyte level is low.

1. Battery2. Battery breather hose

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When inspecting the battery, besure the breather hose is routedcorrectly. If the breather hose ispositioned in such a way as tocause battery electrolyte or gas toexit onto the frame, structural andcosmetic damage to the motorcy -cle can occur.

1 2

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Battery electrolyte is poisonousand dangerous, causing severeburns, etc. It contains sulfuricacid. Avoid contact with skin, eyesor clothing.ANTIDOTE:88 EXTERNAL: Flush with water.88 INTERNAL: Drink large quanti -

ties of water or milk. Followwith milk of magnesia, beatenegg, or vegetable oil. Call aphysician immediately.

88 EYES: Flush with water for 15minutes and get prompt med -ical attention.

Batteries produce explosivegases. Keep sparks, flame, ciga -rettes etc., away. Ventilate whencharging or using in an enclosedspace. Always shield your eyeswhen working near batteries.KEEP OUT OF REACH OF CHIL -DREN.

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Replenishing the battery fluidA poorly maintained battery will cor-rode and discharge quickly. The bat-tery fluid should be checked at leastonce a month. The level should bebetween the minimum level and max-imum level marks. Use only distilledwater if refilling is necessary.

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Normal tap water contains miner -als which are harmful to a battery;therefore, refill only with distilledwater.

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Take care not to spill battery fluidon the chain.Battery fluid may weaken the chaincausing shorter chain life and pos -sibly result in an accident.

1. Maximum level mark2. Minimum level mark

12

Battery storage8 When the motorcycle will not be

used for a month or longer,remove the battery, fully chargeit and store it in a cool, dry place.Completely recharge the batterybefore reinstallation.

8 If the battery will be stored forlonger than two months, checkthe specific gravity of the fluid atleast once a month and fullyrecharge the battery when it istoo low.

8 Always make sure the connec-tions are correct when puttingthe battery back in the motorcy-cle. Make sure the breather hoseis properly connected and is notdamaged or obstructed.

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EAU00804

Fuse replacementIf the fuse is blown, turn off the mainswitch and the switch of the circuit inquestion. Install a new fuse of speci-fied amperage. Turn on the switchesand see if the electrical device oper-ates. If the fuse immediately blowsagain, consult a Yamaha dealer.

1. Fuse

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Do not use fuses of higher amper -age rating than those recommend -ed. Substitution of a fuse ofimproper rating can cause exten -sive electrical system damage andpossibly a fire.

Specified fuse:10 A

1

1

1. Bolt (×2)

EAU01158

Headlight bulb replacementIf the headlight bulb burns out,replace the bulb as follows:

1. Remove cowling A. (See page 6-6 ~ 6-7 for removal and instal-lation procedures.)

2. Remove the headlight unit byremoving the bolts.

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3. Remove the headlight connectorand the bulb holder cover.

4. Turn the bulb holder counter-clockwise to remove it and thenremove the defective bulb.

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Keep flammable products and yourhands away from a bulb while it ison, as it is hot. Do not touch a bulbuntil it cools down.

5. Put a new bulb into position andsecure it in place with the bulbholder.

1

2

1. Bulb holder cover2. Connector

1

1. Bulb holder

6. Install the bulb holder cover, con-nector and headlight unit.

7. Install the cowling.8. If the headlight beam adjustment

is necessary, ask a Yamahadealer to make that adjustment.

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1. Screw (×2)2. Lens3. Bulb

1. Screw2. Lens3. Bulb

EAU01095

Turn signal light bulbreplacement

1. Remove the screw and the lens.2. Remove the defective bulb by

pushing it inward and turning itcounterclockwise.

3. Install a new bulb by pushing itinward and turning it clockwise.

4. Install the lens and tighten thescrew.

EAU01623*

Tail/brake light bulb replacement

1. Remove the screws and thelens.

2. Remove the defective bulb bypushing it inward and turning itcounterclockwise.

3. Install a new bulb by pushing itinward and turning it clockwise.

4. Install the lens and tighten thescrews.

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Do not over-tighten the screws asthe lens may break.

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1. Disc cover2. Screw (×2)

EAU00898

Front wheel removalEW000122

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88 It is advisable to have aYamaha dealer service thewheel.

88 Securely support the motorcy -cle so there is no danger of itfalling over.

1. Remove the disc cover.2. Remove the speedometer cable

from the front wheel side.

EAU01579

Supporting the motorcycleSince the Yamaha DT125R has nocenterstand, follow these precautionswhen removing the front and rearwheel or performing other mainte-nance requiring the motorcycle tostand upright. Check that the motor-cycle is in a stable and level positionbefore starting any maintenance. Astrong wooden box can be placedunder the engine for added stability.

Front wheel serviceTo stabilize the rear of the motorcy-cle, either use a motorcycle stand orplace a motorcycle jack under theframe in front of the rear wheel toprevent it from moving from side toside. Then use a motorcycle stand toelevate the front wheel off of theground.

Rear wheel serviceUse a motorcycle stand or motorcyclejack to elevate the motorcycle so therear wheel is off the ground.Alternatively, two jacks can be placedunder the frame or swingarm.

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3. Elevate the front wheel by plac-ing a suitable stand under theengine.

4. Loosen the wheel axle holdernuts.

5. Remove the wheel axle and thefront wheel. Make sure themotorcycle is properly supported.

NOTE:Do not depress the brake lever whenthe disc and caliper are separated.

EAU03104

Front wheel installation1. Install the speedometer gear unit

housing into the wheel hub.Make sure the speedometer gearunit housing is installed with theprojections meshed into theslots.

2. Lift up the wheel between thefront fork legs and guide thebrake disc between the brakepads. Make sure there is enoughgap between the brake padsbefore inserting the brake disc.

1. Speedometer cable2. Axle holder nut (×4)3. Wheel axle 3. Make sure the slot in the

speedometer gear unit fits overthe stopper on the front forkouter tube.

4. Install the wheel axle and let themotorcycle down.

5. Tighten the wheel axle the speci-fied torque.

Tightening torque:Wheel axle:

58 Nm (5.8 m0kg)

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1. Swingarm end bolt (×2)

EAU03105

Rear wheel removalEW000122

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88 It is advisable to have aYamaha dealer service thewheel.

88 Securely support the motorcy -cle so there is no danger of itfalling over.

1. Loosen the rear axle nut.2. Elevate the rear wheel by placing

a suitable stand under theengine.

3. Remove the swingarm end bolts.

4. Remove the axle nut.5. Push the wheel forward and

remove the drive chain.6. Pull out the rear axle and remove

the wheel assembly by pullingbackward.

NOTE:8 Do not depress the brake pedal

when the disc and caliper areseparated.

8 You do not have to disassemblethe chain in order to remove orinstall the rear wheel.

2

1

1. Axle nut2. Chain adjusting plate

6. Tighten the axle holder nuts tothe specified tightening torque.Tighten the upper nuts first andthen lower ones. When tightenedin this sequence, there should bea gap formed at the bottom ofthe axle holder.

7. After tightening the holder nuts,push down on the handlebarsseveral times and check if thefork rebounds smoothly.

Tightening torque:Axle holder nut:

10 Nm (1.0 m0kg)

1

1. Gap

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EAU03106

Rear wheel installation1. Install the rear wheel and chain.

Guide the brake disc betweenthe brake pads. Make sure thereis enough gap between thebrake pads before inserting thebrake disc.

2. Make sure the wheel axle isinserted from the left side andthat the chain adjusting platesare installed with the punchedside outward.

3. Install the swingarm end bolts.4. Adjust the drive chain.5. Tighten the following parts to the

specified torques.

Tightening torque:Axle nut:

90 Nm (9.0 m0kg)Swingarm end bolt:

3 Nm (0.3 m0kg)

EAU01008

TroubleshootingAlthough Yamaha motorcyclesreceive a rigid inspection before ship-ment from the factory, trouble mayoccur during operation.Any problem in the fuel, compres-sion, or ignition systems can causepoor starting and loss of power. Thetroubleshooting chart describes aquick, easy procedure for makingchecks.If your motorcycle requires anyrepair, bring it to a Yamaha dealer.The skilled technicians at a Yamahadealership have the tools, experi-ence, and know-how to properly ser-vice your motorcycle. Use only gen-uine Yamaha parts on yourmotorcycle. Imitation parts may looklike Yamaha parts, but they are ofteninferior. Consequently, they have ashorter service life and can lead toexpensive repair bills.

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EAU03108

Troubleshooting chartsEW000125

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Never check the fuel system while smoking or in the vicinity of an open flame.

Check if there is fuel

1. FuelEnough fuel.

No fuel.

Go to compression check.

Supply fuel. Engine doesn’t start, go to compression check.

Use kick starter.

2. CompressionThere is compression.

No compression.

Go to ignition check.

Ask a Yamaha dealer to

Remove spark plug

3. IgnitionWet.

Dry.

Wipe clean with dry cloth and correct

Ask a Yamaha dealer to inspect. Engine doesn’t start, ask a Yamaha

Open throttle half-way and start

in the fuel tank.

and check electrodes.

spark gap or replace spark plug. the engine.

dealer to inspect.

inspect.

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4. Engine overheatingEW000070

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Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may beblown out under pressure, which could cause serious injury. Open the radiator cap as follows. Wait until theengine has cooled. Remove the radiator cap stopper by removing the screw. Place a thick rag like a towel overthe radiator cap and slowly rotate the cap counterclockwise to the detent. This procedure allows any residualpressure to escape. When the hissing sound has stopped, press down on the cap while turning counterclock -wise and remove it.

Wait until the Check the coolant level in the

Level is OK.

Level is low, check the

No

Leakage.Ask a Yamaha dealer to inspect

Add coolant. (See NOTE.)

Restart the engine. If the engine overheats again, ask a

engine has cooled. reservoir tank and/or radiator.

cooling system for leakage.

Yamaha dealer to inspect and repair the cooling system.

leakage.

and repair the cooling system.

NOTE:If it is difficult to get the recommended coolant, tap water can be temporarily used, provided that it is changed to the rec-ommended coolant as soon as possible.

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EAU01518

MOTORCYCLE CARE AND ST ORAGE

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CareThe exposure of its technologymakes a motorcycle charming butalso vulnerable. Although high-qualitycomponents are used, they are notall rust-resistant. While a rustyexhaust pipe may remain unnoticedon a car, it does look unattractive ona motorcycle. Frequent and propercare, however, will keep your motor-cycle looking good, extend its life andmaintain its performance. Moreover,the warranty states that the vehiclemust be properly taken care of. Forall these reasons, it is recommendedthat you observe the following clean-ing and storing precautions.

Before cleaning1. Cover up the muffler outlet with a

plastic bag.2. Make sure that all caps and cov-

ers as well as all electrical cou-plers and connectors, includingthe spark plug cap, are tightlyinstalled.

3. Remove extremely stubborn dirt,like oil burnt onto the crankcase,with a degreasing agent and abrush, but never apply suchproducts onto seals, gaskets,sprockets, the drive chain andwheel axles. Always rinse the dirtand degreaser off with water.

CleaningAfter normal useRemove dirt with warm water, a neu-tral detergent and a soft cleansponge, then rinse with plenty ofclean water. Use a tooth or bottlebrush for hard-to-reach parts.Tougher dirt and insects will come offmore easily if the area is covered witha wet cloth for a few minutes beforecleaning.

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88 Avoid using strong acidicwheel cleaners, especially onspoked wheels. If you do usesuch products for hard-to-remove dirt, do not leave it onany longer than instructed,then thoroughly rinse it offwith water, immediately drythe area and apply a corrosionprotection spray.

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88 Improper cleaning can damagewindshields, cowlings, panelsand other plastic parts. Useonly a soft, clean cloth orsponge with mild detergentand water to clean plastic.

88 Do not use any harsh chemicalproducts on plastic parts. Besure to avoid using cloths orsponges which have been incontact with strong or abra -sive cleaning products, sol -vent or thinner, fuel (gasoline),rust removers or inhibitors,brake fluid, antifreeze or elec -trolyte.

88 Do not use high-pressurewashers or steam-jet cleanerssince they cause water seep -age and deterioration in thefollowing areas: seals (ofwheel bearings, swingarmbearings, forks and brakes),electric components (cou -plers, connectors, instru -ments, switches and lights),breather hoses and vents.

88 For motorcycles equippedwith a windshield: Do not usestrong cleaners or hardsponges as they will causedulling or scratching. Somecleaning compounds for plas -tic may leave scratches on thewindshield. Test the producton a small hidden part of thewindshield to make sure theydo not leave any marks. If thewindshield is scratched, use aquality plastic polishing com -pound after washing.

After riding in the rain, near the seaor on salt-sprayed roadsSince sea salt or salt sprayed on theroads in the winter are extremely cor-rosive in combination with water,carry out the following steps aftereach ride in the rain, near the sea oron salt-sprayed roads. (Salt sprayedin the winter may remain on the roadswell into spring.)

1. Clean your motorcycle with coldwater and soap after the enginehas cooled down.

ECA00012

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Do not use warm water since itincreases the corrosive action ofthe salt.

2. Be sure to apply a corrosion pro-tection spray on all (evenchrome- and nickel-plated) metalsurfaces to prevent corrosion.

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After cleaning1. Dry the motorcycle with a

chamois or an absorbing cloth.2. Immediately dry the drive chain

and lubricate it to prevent it fromrusting.

3. Use a chrome polish to shinechrome, aluminum and stainless-steel parts, including the exhaustsystem. (Even the thermallyinduced discoloring of stainless-steel exhaust systems can beremoved through polishing.)

4. To prevent corrosion, it is recom-mended to apply a corrosion pro-tection spray on all (evenchrome- and nickel-plated) metalsurfaces.

5. Use spray oil as a universalcleaner to remove any remainingdirt.

6. Touch up minor paint damagecaused by stones, etc.

7. Wax all painted surfaces.8. Let the motorcycle dry complete-

ly before storing it or covering it.

EWA00001

w

Make sure that there is no oil orwax on the brakes and tires. If nec -essary, clean the brake discs andlinings with a regular brake disccleaner or acetone, and wash thetires with warm water and mildsoap. Then, carefully test themotorcycle for its braking perfor -mance and cornering behavior.

ECA00013

cC

88 Apply spray oil and wax spar -ingly and wipe off any excess.

88 Never apply oil or wax on rub -ber and plastic parts, but treatthem with a suitable care prod -uct.

88 Avoid using abrasive polish -ing compounds as they wearaway the paint.

NOTE:Consult a Yamaha dealer for adviceon what products to use.

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StorageShort-termAlways store your motorcycle in acool, dry place and, if necessary, pro-tect it against dust with a porouscover.

ECA00014

cC

88 Storing the motorcycle in apoorly ventilated room or cov -ering it with a tarp while it isstill wet will allow water andhumidity to seep in and causerust.

88 To prevent corrosion, avoiddamp cellars, stables (becauseof the presence of ammonia)and areas where strong chemi -cals are stored.

Long-termBefore storing your motorcycle forseveral months:

1. Follow all the instructions in the“Care” section of this chapter.

2. Drain the carburetor float cham-ber by loosening the drain bolt;this will prevent fuel depositsfrom building up. Pour thedrained fuel into the fuel tank.

3. Only for motorcycles equippedwith a fuel cock which has an“OFF” position: Turn the fuelcock to “OFF”.

4. Fill up the fuel tank and add fuelstabilizer (if available) to preventthe fuel tank from rusting and thefuel from deteriorating.

5. Perform the following steps toprotect the cylinder, piston rings,etc. from corrosion.

a. Remove the spark plug cap andspark plug.

b. Pour a teaspoonful of engine oilinto the spark plug bore.

c. Install the spark plug cap ontothe spark plug and place thespark plug on the cylinder headso that the electrodes aregrounded. (This will limit spark-ing during the next step.)

d. Turn the engine over severaltimes with the starter. (This willcoat the cylinder wall with oil.)

e. Remove the spark plug cap fromthe spark plug, install the sparkplug and then the spark plugcap.

EWA00003

w

When turning the engine over, besure to ground the spark plug elec -trodes to prevent damage or injuryfrom sparking.

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6. Lubricate all control cables andthe pivoting points of all leversand pedals as well as of thesidestand/centerstand.

7. Check and, if necessary, correctthe tire air pressure, then raisethe motorcycle so that both of itswheels are off the ground.Alternatively, turn the wheels alittle every month in order to pre-vent the tires from becomingdegraded in one spot.

8. Cover up the muffler outlet with aplastic bag to prevent moisturefrom entering.

9. Remove the battery and fullycharge it. Store it in a cool, dryplace and recharge it once amonth. Do not store the batteryin an excessively cold or warmplace (less than 0 °C or morethan 30 °C). For more informa-tion, see “Battery storage” in thechapter “PERIODIC MAINTE-NANCE AND MINORREPAIRS”.

NOTE:Make any necessary repairs beforestoring the motorcycle.

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EAU01038

SPECIFICATIONS

Specifications

Model DT125R

Dimensions

Overall length 2,170 mm2,235 mm (N, S, SF, CH, A only)

Overall width 830 mm

Overall height 1,255 mm

Seat height 885 mm

Wheel base 1,415 mm

Ground clearance 315 mm

Minimum turning radius 2,100 mm

Basic weight (with oil and full fuel tank) 127 kg

129 kg (CH, A only)

Engine

Engine type Liquid-cooled 2-stroke

Cylinder arrangement Forward-inclined singlecylinder

Displacement 124 cm3

Bore × Stroke 56.0 × 50.7 mm

Compression ratio 6.7:1

Starting system Kick starter

Lubrication system Separate lubrication(Yamaha autolube)

Engine oil (2-cycle)

Type 2 stroke engine oil

Capacity

Total amount 1.2 L

Transmission oil

Type SAE 10W30 type SE motor oil

Capacity

Periodic oil change 0.75 L

Total amount 0.8 L

Radiator capacity

(Including all routes) 0.92 L

Air filter Wet type element

Fuel

Type Regular unleaded gasoline

Fuel tank capacity 10 L

Reserve amount 1.8 L

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Carburetor

Type × quantity TM28SS × 1

Manufacturer MIKUNI

Spark plug

Manufacturer / type NGK / BR9ESNGK / BR8ES (CH, A only)

Spark plug gap 0.7 ~ 0.8 mm

Clutch type Wet, multiple-disc

Transmission

Primary reduction system Helical gear

Primary reduction ratio 71/22 (3.227)

Secondary reduction system Chain drive

Secondary reduction ratio 57/16 (3.563)

Transmission type Constant mesh 6-speed

Operation Left foot operation

Gear ratio 1st 2.833

2nd 1.875

3rd 1.412

4th 1.143

5th 0.957

6th 0.818

Chassis

Frame type Semi double cradle

Caster angle 27°30’

Trail 113 mm

Tire

Type With tube

Front

Size 2.75-21 45P

Manufacturer/ BRIDGESTONE / TW25model

Rear

Size 4.10-18 59P

Manufacturer/ BRIDGESTONE / TW44model

Maximum load* 180 kg178 kg (CH, A only)

Air pressure (cold tire)

up to 90 kg load*

Front 125 kPa (1.25 kg/cm2, 1.25 bar)

Rear 150 kPa (1.50 kg/cm2, 1.50 bar)

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SPECIFICATIONS

90 kg load ~ maximumload*


Rear 175 kPa (1.75 kg/cm2, 1.75 bar)

Off-road riding


Rear 150 kPa (1.50 kg/cm2, 1.50 bar)

* Load is total weight of cargo, rider, passenger and accessories.

Wheels

Front

Type Spoke wheel

Size 1.60 × 21

Rear

Type Spoke wheel

Size 1.85 × 18

Brakes

Front

Type Single disc brake

Operation Right hand operation

Fluid DOT 3 or DOT 4

Rear

Type Single disc brake

Operation Right foot operation

Fluid DOT 3 or DOT 4

Suspension

Front Telescopic fork

Rear Swingarm (link suspension)

Shock absorber

Front Coil spring/oil damper

Rear Coil-gas spring/oil damper

Wheel travel

Front 270 mm

Rear 260 mm

Electrical

Ignition system C.D.I.

Charging system

Type C.D.I. magneto

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Battery

Type GM3-3B

Voltage, capacity 12 V, 3 AH

Headlight type Conventional incandescent bulb

Bulb voltage, wattage × quantity

Headlight 12 V, 45/40 W × 1

Tail / Brake light 12 V, 5/21 W × 1

Front flasher light 12 V, 21 W × 2

Rear flasher light 12 V, 21 W × 2

Auxiliary light 12 V, 4 W × 1

12 V, 3.4 W × 1 (GB only)

Meter light 12 V, 3.4 W × 2

Neutral indicator light 12 V, 3.4 W × 1

High beam indicator light 12 V, 3.4 W × 1

Oil level indicator light 12 V, 3.4 W × 1

Turn indicator light 12 V, 3.4 W × 1

Fuse

Main 10 A

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SPECIFICATIONS

EAU01064

HOW TO USE THE CONVERSION TABLEAll specification data in this manual are listed in SI andMETRIC UNITS.Use this table to convert METRIC unit data to IMPERIAL unit data.

Ex.

METRIC MULTIPLIER IMPERIAL

** mm × 0.03937 = ** in2 mm × 0.03937 = 0.08 in

METRIC TO IMPERIAL

Metric unit Multiplier Imperial unit

m • kg 7.233 ft • lb

Torquem • kg 86.794 in• lbcm • kg 0.0723 ft • lbcm • kg 0.8679 in • lb

Weightkg 2.205 lbg 0.03527 oz

Speed km/hr 0.6214 mph

km 0.6214 mim 3.281 ft

Distance m 1.094 ydcm 0.3937 inmm 0.03937 in

cc (cm3) 0.03527 oz (IMP liq.)Volume/ cc (cm3) 0.06102 cu • inCapacity lt (liter) 0.8799 qt (IMP liq.)

lt (liter) 0.2199 gal (IMP liq.)

kg/mm 55.997 lb/inMisc. kg/cm2 14.2234 psi (lb/in2)

Centigrade(°C) 9/5 + 32 Fahrenheit(°F)

CONVERSION TABLE

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EAU01039

CONSUMER INFORMATION

1

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EAU02944

Identification numberrecordsRecord the key identification number,vehicle identification number andmodel label information in the spacesprovided for assistance when order-ing spare parts from a Yamaha deal-er or for reference in case the vehicleis stolen.

1. KEY IDENTIFICATIONNUMBER:

2. VEHICLE IDENTIFICATIONNUMBER:

3. MODEL LABEL INFORMATION:

EAU01042

Key identification numberThe key identification number isstamped on the key.Record this number in the space pro-vided and use it for reference whenobtaining a new key.

EAU01043

Vehicle identificationnumberThe vehicle identification number isstamped into the steering head pipe.Record this number in the space pro-vided.

NOTE:The vehicle identification number isused to identify your motorcycle andmay be used to register your motor-cycle with the licensing authority inyour state.

1. Key identification number 1. Vehicle identification number

16

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EAU01049

Model labelThe model label is affixed to the loca-tion shown in the figure. Record theinformation on this label in the spaceprovided. This information will beneeded to order spare parts fromyour Yamaha dealer.

1. Model label

3MB-9-E7 12/27/00 2:52 PM Page 89

PRINTED ON RECYCLED PAPER PRINTED IN JAPAN

2000·12–0.4×1(E) !

OWNER’S MANUAL

3MB-28199-E7

DT125RYAMAHA MOTOR CO., LTD.

owners manual dt125r

Documents

yamaha dealer

yamaha team

yamaha areputation

operatingthis motorcycle

yamaha world of motorcycling

damage tothe motorcycle

key information

product design