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F250B

Offshore, inshore, saltwater or fresh, today’s larger boats demand big power. At the same time, today’s savvy consumers are demanding clean, quiet, fuel-effi cient four stroke outboards; all in a package that’s easy to operate and convenient to use. Tough to do? Not for Yamaha.

Yamaha has successfully integrated its highly-acclaimed Command Link® Digital Electronic Control system with its reliable and long-proven F250 outboard. Feature packed with all the innovation, reliability, and long-term value that are synonymous with Yamaha, this new outboard offers the versatility, power, and convenience today’s boaters demand.

AVAILABLE MODELS:

F250BTXR

LF250BTXR

F250BTUR

LF250BTURCONVENIENCE AND CONTROLFrom its plug-and-play type installation to the smooth feel created through electronic control of all throttle and shift functions, Yamaha’s new F250B is the perfect blend of power, convenience, and control. Features like built-in multiple engine synchronization, adjustable throttle friction and neutral detents, and built-in redundancy systems make it the ideal engine with ideal control.

PERFORMANCE The Yamaha F250B is a proven marine powerhouse built upon a compact and lightweight 60-degree, 3.3 iter (204 c.i.) block. Its Variable Camshaft Timing dramatically increases low and mid-range torque, for surprising holeshot and mid-range throttle capabilities. A specially-designed air intake system; coupled with proven Yamaha multi-point electronic fuel injection; delivers, easy, instant starts, fast acceleration, and maximum top end speed. An electronically-controlled single throttle valve feeds individual long intake tracks, which dramatically improves hole shot, acceleration, and mid-range performance. And, because it’s a Yamaha four stroke outboard, you know it’s clean, quiet, smooth, and economical.

RELIABILITY/DURABILITYYamaha has taken the new F250B to the next level of reliability and durability, by upgrading its corrosion protection package. Sharing the same special powerhead painting process with its big brother, the Yamaha F350, now the inside as well as the outside of the powerhead is protected with special anti-corrosion paint using an advanced “electro-deposited” process. This helps ensure longer engine life, even in the harshest environments, which meansmore years of use, enjoyment, and peace of mind.

VALUEEnhanced reliability. Exceptionally smooth and quiet performance. Outstanding fuel economy. Maximum performance and convenience. All combine to make the new Yamaha F250B an incredibly powerful value, both now and in the years ahead.

HOT SHEETYA M A H A M A R I N E

Effective July 1, 2008

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featuring Command Link® Controls and Gauges**

** Command Link controls and gauges sold separately to meet specifi c needs.

F250B FeaturesF250B Features

F250B featuring Command Link® Controls and GaugesF250B featuring Command Link® Controls and Gauges

Electronic Single Throttle Valve

Reliability/DurabilityPerformance Convenience

Fuel VaporReduction System

Large Water Separator with Water Sensor

Warning & Protection Systems

Enhanced Ultimate Corrosion Protection System

Serpentine Timing Belt (Kevlar)

Multi-Point ElectronicFuel Injection

Direct Coil-in-CapIgnition

Lubricant CoatedStrong Forged Piston

In-Bank™ Exhaust

Tuned Long Track Intake Manifold

Command LinkDigital ElectronicControls

Location ExchangeablePTT Switch

Command Link Gauges (square or round)

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By just pressing a button on the Command Link tachometer, the operator can adjust the engine’s trolling speed from 600 ~ 1000 rpm, in 50-rpm increments. This helps provide precise and consistent trolling speeds in a wide array of conditions.

Command Link Digital Electronic Controls feature automatic engine sychronization in twin and triple engine confi gurations during normal cruise conditions. It’s not only convenient, it helps maximize effi ciency and running performance.

Yamaha’s new Command Link Digital Electronic Control systemsare electronically-actuated, meaning there are no cables physically moving. This greatly reduces shifting and throttle effort by eliminating common cable friction. All Command Link Digital Electronic Controls have adjustable throttle lever friction and shifting detents, and feature critical system redundancy for added reliability.

Precise Trolling Control

Choice of Control Style

Command Link Digital Electronic Controls come in a variety of styles, including the new 6X7 concealed side-mount. They’re also available in binnacle style for single, twin, and triple engine applications; and all feature smooth, virtually effortless shifting and throttle functions.

Automatic Engine Synchronization

Smooth Reliable Shifting and Throttle


Advanced Technology

Second Station

Main Station

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Command Link Digital Electronic Controls make dual station installations easy and conveninent to use. They feature ‘plug-’n’-play’ water-resistant connections and simple-to-use station selector switches and, since there’s no conventional remote control cables, shifting and throttle functions are a breeze.

Easy Dual Station Control

Engine exhaust is routed through a maze before exiting above the waterline through the idle exhaust relief outlet, for unbelieveably smooth and quiet operation.

Smooth and Quiet

All F250B models are equipped with an Engine Control Module that interfaces with Yamaha Diagnostic System software. This provides a view of selected past and current running conditions, to help technicians provide a complete and accurate diagnosis.

More Information

Command Link gauges offer a wealth of information to the operator in order to help provide effi cient and effective operation. There’s even a combination Speedometer and Fuel Management Gauge, to help conserve valuable dash space.

Easy Dual Station Control


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Yamaha’s variable camshaft timing system advances and retards the angle of the intake camshaft to dramatically increase power and throttle response in the low- and mid-rpm ranges. This gives the engine substantially greater torque between 2000 ~ 3500 RPM to provide excellent power to plane.

All air entering the engine block of the F250B is routed through a single electronically-controlled throttle valve, to ensure the precise amount of air necessary for optimum power and fuel effi ciency. The air silencer box reduces intake noise and air turbulence for smooth, quiet operation.

Individual intake and exhaust camshafts provide more precise valve timing control and have less moving parts than conventional push rod systems for increased reliability. This superior design also allows for use of 4 valves per cylinder which exchange intake and exhaust gases more effi ciently for responsive power and increased fuel economy.

Reliable and Responsive

Hole Shot and Mid-Range Punch

Fuel Effi ciency

Six individual compact electronic fuel injectors deliver the exact amount of fuel needed for optimum performance and economy. Controlled by the Engine Control Module via input from an array of on-engine sensors, their location just above the intake valves enhances fuel atomization, resulting in more effi cient combustion.

Precise Throttle Control

Reliable and Responsive


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The F250B comes standard with dual pairs of water inlets, for increased cooling effi ciency. Located on the front and both sides of the lower unit, each pair of pick-ups operate independently of each other to provide proper water fl owin a wide variety of applications and conditions.

All F250B outboards feature a large, on-engine water separating fuel fi lter with a water sensor. Used in conjunction with Yamaha’s 10-Micron Water SeparatingFuel Filter, it helps separate water and contaminants from the fuel before they can reach the outboard’s other fi lters and fuel injectors.

Yamaha improved their legendary Ultimate Corrosion Protection System for the F250B. Yamaha’s proprietary alloys, ACP-221 paint process, and freshwater fl ush device are just the start. Multiple sacrifi cial anodes in and on the power head, mid-section, and lower unit; a special electro-deposited paint process that coats both the entire outside and the inside passages of the block and cylinder heads; and a specially-painted and treated exhaust system means better long-term protection and maximum value.

Long Term Value

Controlled Operating Termperature

Internal Protection from the Elements

The F250B features a proven cowling drain system, to easily and effi ciently drain away any water that enters the cowling during normal engine operation. Incoming air is routed through a labyrinth of passages that trap and drain water before it enters the engine’s intake, for maximum reliability.

Cleaner Fuel

Long Term Value


System Diagram

Vapor

WaterSeparator

Command Link Speedometer

FuelPump

Filter

Canister

Air

Fuel

ShiftPositionSensor

FuelVaporShut-OffValve

Cam Position SensorCrank Position SensorIntake Air Pressure SensorOil Pressure SensorEngine Temperature SensorIntake Air Temperature SensorKnock SensorCooling Water Pressure Sensor (Optional)Over Water Speed Sensor (Optional)

Command LinkDigital Electronic Remote Control

Hub

Vapor Separator/Fuel Injection Pump

Shift Actuator

Battery

ThrottlePositionSensor

Ignition Key Switch

ReliefValve

ECU

Throttle Control

Ignition Control

Fuel Control

Variable Camshaft Timing Control

Fuel InjectorVCT

Fuel Injector

IG Coil

Shift Control

GPS

ECM

(Variable Troll RPM Control)

Command LinkConcealedRemote Control(example)

Water Sensor

Command Link Tachometer

VCT

IG Coil

(Optional, customer-provided

compatible unit)

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System Diagram


This document contains many of Yamaha’s valuable trademarks. It may also contain trademarks belonging to other companies. Any references to other companies or their products are for identifi cation purposes only, and are not intended to be an endorsement.

Due to Yamaha’s ongoing commitment to product improvement, we reserve the right to change without notice, equipment, materials, or specifi cations.

© 2008 Yamaha Motor Corporation

F250B Specifi cations

Model F250B / LF250B

Type Four Stroke, 24-Valve DOHC Direct-Action, 60° V6

Displacement 3352cc (204.6 c.i.)

Bore x Stroke 94.0 x 80.5mm (3.70 x 3.17 in)

Full Throttle RPM Range 5000 - 6000

Horsepower Rating at Propshaft 250 hp @ 5500 rpm (183.9kw @ 5500 rpm)

Compression Ratio 9.9:1

Fuel Induction/Scavenging DOHC / 24-valve with Variable Camshaft Timing

Alternator Output 46 Amp (38 Amp @ 1000 RPM)

Fuel Delivery Multi-point Electronic Fuel Injection

Starting Method Electric

Ignition TCI / 32-bit Micro-computer Control w/ Direct “Coil-in-Cap” Ignition

Lubrication Wet Sump

Degree of Trim/Tilt -3 to +16/70°

Exhaust Through Propeller, Water-cooled, Labyrinth

Cooling Raw Water, Thermostatically-controlled

Rectifi er/Regulator 3-phase, Water-cooled (standard)

Gear Ratio 2.0:1 (30/15)

Recommended Fuel Unleaded Gasoline (Minimum Pump Octane 89)

Recommended Oil Yamalube® 4-M FC-W® 10W-30 or 20W-40

Oil Capacity 5.9 Quarts (5.6L)

Remote Controls Command Link Digital Electronic Controls**

Command Link Gauges Required (square or round)**

Multiple Outboard Sychronization Auto Synch Throttle Control in Twin and Triple Applications

Variable Trolling Throttle Adjustment +/- 50 RPM Increments (600 ~ 1000 RPM Range) via Command Link

Steering Angle (maximum) 32° From Center (either direction)

Mounting Centers 28.5 inches

Weight (dry) 609 lbs.

Shaft Length 25” (X) / 30” (U)

C.A.R.B. Emissions Rating 3-Star

Limited Warranty 3-Year Pleasure, 3-Year Government, 1-Year Commercial

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** Command Link controls and gauges sold separately to meet specifi c needs.

F250B S ifi ti


f250 hot sheet - yamaha - motorcycles, hot sheet… · control system with its reliable and...

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