Parts Manual968999250 / Z4818BIA

Models:

MANUAL NO. 539109796 REV. IR (09/18/04)

2

3

INDEX

©2004 Husqvarna. All Rights Reserved.Beatrice, NE. Printed in U.S.A.

MAIN FRAME ASSEMBLY .................... 4-5BRAKE LINKAGE ................................. 6CONSOLE ASSEMBLY ......................... 7CASTER ASSEMBLY............................ 8MOTION CONTROL ASSEMBLY ......... 9MOTION CONTROL LEVERS .............. 10DECK LIFT ASSEMBLY........................ 11IZT ASSEMBLY ..................................... 12ENGINE ASSEMBLY ............................. 13DECAL PLACEMENT ........................... 14ELECTRICAL COMPONENTS ............. 1548" DECK ASSEMBLY .......................... 16WIRING SCHEMATIC........................... 17PARTS DESCRIPTION ........................ 18-23

4

MAIN FRAME ASSEMBLY

539 10 97-81

539 10 12-31

539 10 13-31

REF. CASTER ASSEMBLY(TWO PER UNIT)

ENGINE STARTER STUD

539 10 75-85539 10 74-75 (x44)

539 10 74-80

539 10 74-91

539 10 12-32 (x4)

539 10 14-74 (x2)

539 10 12-32 (x4)539 10 11-51 (x2)

539 10 99-88

539 10 13-31 (x3)

539 99 05-50 (x3)

539 99 03-62 (x2)539 10 27-59 (x3)

539 97 69-78 (x4)539 10 17-14

539 10 59-74 (x2)539 10 50-39 (x2)

539 97 69-78 (x4)539 99 10-34 (x4)

539 97 69-79 (x9)

539 10 81-20 (x5)

539 99 07-17 (x13)539 10 28-45 (x8)539 10 78-04

539 10 44 09539 10 61-88

539 99 06-92 (x23)539 99 01-87 (x2)539 97 69-34 (x4)

539 10 25-02 (x8)539 99 06-92 (x23)539 10 75-75

539 10 74-75 (x44)

539 10 74-75 (x44)539 10 25-87 (x4)

539 10 75-79539 10 00-32 (x5)539 10 13-32

539 99 05-50

539 97 69-79

539 10 76-20539 99 06-92 (x23)

539 97 69-49

539 10 19-77

539 99 06-29

539 99 06-13

5

59 55

MAIN FRAME ASSEMBLY

539 10 75-82

539 10 74-75 (x44)539 10 25-87 (x4)

539 10 75-79

539 10 00-32 (x5)

539 10 00-32 (x5)

539 10 74-75 (x44)539 10 96-33

539 10 25-87 (x4)

539 10 74-75 (x44)

539 10 75-87539 97 77-78 (x3)

539 10 99-90

539 10 75-23539 10 44-11 (x4)

539 99 06-92 (x4)

539 10 74-75 (x44)539 99 01-34 (x2)

539 10 79-68

539 10 80-09539 10 80-08

539 91 22-34

539 10 75-47 (x2)

539 10 11-73 (x8)

539 97 69-79 (x9)539 10 26-85

6

BRAKE LINKAGE

539 10 93-65

539 10 93-69539 10 96-19

539 10 18-36

539 10 93-63

539 99 05-17

539 99 06-29

539 99 05-17

539 10 93-67

539 10 93-68 (x2)

539 10 93-68 (x2)

539 10 26-78

539 10 92-73 (x2)

539 97 69-79 (x4)

539 99 03-65 (x3)

539 97 77-03 (x3)

539 97 74-65 (x2)

539 99 01-55 (x7)539 10 97-98539 10 96-20 (x2)

539 10 92-73 (x2)539 10 93-66

539 97 77-03 (x3)

539 99 03-65 (x3)539 99 01-55 (x7)

539 10 93-70 (x2)539 10 27-96 (x2)

539 97 69-79 (x4)539 97 69-88 (x2)

539 97 69-52 (x2)

539 10 10-80

7

539 10 17-68

539 10 25-40

539 10 75-93

539 10 75-83

539 10 79-57

539 10 98-58

539 99 04-11 (x6)

539 97 69-77 (x2)

539 10 75-41

539 10 75-44

539 99 04-11 (x6)

CONSOLE ASSEMBLY

539 10 27-33

8

CASTER ASSEMBLY

539 10 74-94

539 10 19-07

539 10 13-31

539 10 55-43

539 10 69-95

539 91 22-34

539 10 33-00

539 10 69-94

539 10 69-93

9

MOTION CONTROL ASSEMBLY

REF.

REF.

REF.

REF.TO RIGHTIZT

TO LEFTIZT

REF.

539 10 76-28

539 10 35-47 (x4)

539 10 81-20 (x4)

539 10 80-72 (x2)

539 10 28-28 (x4)

539 10 28-28 (x4)539 10 28-27 (x4)

539 10 27-20 (x2)

539 10 28-27 (x4)

539 10 35-47 (x4)

539 10 19-49 (x6)

539 10 76-29 (x2)539 10 24-63

539 10 76-32 (x2)

539 10 00-32 (x5)539 10 19-49 (x6)

539 10 19-49 (x6)

539 10 74-75 (x4)539 10 93-49

539 10 93-51

539 10 19-49 (x6)539 99 06-27 (x4)

539 10 25-91 (x2)539 10 00-32 (x5)

539 99 02-23 (x6)

539 99 10-73 (x2)

539 99 07-17 (x12)539 99 06-92 (x26)

539 10 93-60 (x2)

539 10 00-32 (x5)

539 10 00-32 (x5)

539 10 75-68

539 10 74-75 (x4)

539 10 93-61

539 99 06-92 (x26)539 97 69-88 (x4)

539 10 81-20 (x4)539 10 19-49 (x6)

539 10 93-73 (x2)

539 99 06-27 (x4)539 10 25-90 (x2)

539 99 06-92 (x26)

539 10 00-32 (x5)

539 97 69-88 (x4)539 99 06-92 (x26)

539 99 07-17 (x12)

539 10 93-56 (x2)539 10 00-32 (x5)

539 10 19-49 (x6) 539 10 93-62539 10 25-92 (x2)

539 10 75-26 (x2)539 10 82-42 (x2)539 10 25-93 (x4)539 99 05-63 (x4)

10

MOTION CONTROL LEVERS

REF.

539 10 96-49 (x2)

539 97 69-79 (x4)

539 99 01-22 (x2)

539 10 96-42

539 10 00-32 (x4)

539 10 96-49 (x2)

539 97 69-79 (x4)

539 10 96-40

539 10 00-32 (x4)

539 10 10-80 (x2)

539 99 10-34 (x4)

539 99 01-22 (x2)

539 10 00-32 (x4)

539 10 97-51

539 99 07-30 (x4)

539 99 07-30 (x4)

539 10 10-80 (x2)

539 99 10-34 (x4)

539 10 97-52

539 10 00-32 (x4)

11

DECK LIFT ASSEMBLY

539 10 75-09

REF.

REF.

REF.

539 97 69-79 (x9)

539 10 48-08 (x4)

539 99 07-17 (x13)

539 10 48-07 (x2)

539 99 10-46 (x4)539 10 75-91539 10 75-42

539 99 05-17 (x8)539 97 69-41 (x2)

539 10 75-67 (x2)539 99 03-65 (x15)

539 99 05-17 (x8)

539 99 03-65 (x15)539 10 75-45 (x2)

539 99 03-65 (x15)

539 99 05-17 (x8)

539 99 02-50 (x4)

539 99 06-54 (x4)539 10 75-08 (x2)539 99 06-54 (x4)

539 99 02-50 (x4)539 10 74-84 (x2)

539 99 05-17 (x8)

539 99 06-54 (x4)

539 10 75-35539 10 77-03 (x4)

539 97 69-79 (x9)

539 97 69-79 (x9)

539 10 76-97 (x2)

539 10 00-32 (x5)

539 10 19-49 (x6)

539 97 69-79 (x9)539 10 77-03 (x4)539 10 79-58

539 10 75-43

539 10 75-38539 10 75-10

12

IZT ASSEMBLY(Integraded Zeroturn Transaxle)

539 10 96-38

539 10 79-31539 10 79-21 (x2)

539 10 96-37

539 10 80-02 (x2)

539 99 01-87 (x2)

539 99 06-92 (x14)

539 99 10-46 (x10)

539 99 06-92 (x14)

539 99 07-17 (x11)

539 99 06-92 (x14)

539 99 07-17 (x11)

539 99 07-17 (x11)

539 99 06-92 (x14)

539 99 10-46 (x10)

539 10 75-56

539 10 75-54

539 10 74-98

539 99 01-87 (x2)

539 10 80-02 (x2)

539 97 69-88 (x2)

539 10 77-10

13

BRIGGS & STRATTON ENGINE ASSEMBLY

USE SHROUD BOLTSTO MOUNT

TURNED SHOULDERON PULLEY HUBMUST FACETHE CLUTCH

TO FUEL VALVE

TO FUEL FILTER

TORQUE TO 45 FT./LBS.

GROUND WIRES MOUNTEDTO SHROUD BOLT

539 10 70-98 (x2)

539 10 98-44

539 10 98-43

539 10 74-76 (x4)

539 10 68-19

539 10 56-37

539 10 75-16

539 99 11-20

539 99 02-47

539 10 58-04

539 10 75-57539 91 22-22 (x2)

539 10 55-27539 10 19-95

539 10 82-66

539 10 79-37

539 10 98-37

CLAMP, EXHAUST (NOT SHOWN)

539 10 99-80

539 11 00-93

14

539 11 11-27

DECAL PLACEMENT

12539 97 77-78 (x3)

539 11 10-47 (x2)539 10 75-91

539 10 81-79

539 10 83-86

539 10 33-33 (x2)

539 10 33-33 (x2)

539 10 79-59

539 10 57-45

539 10 79-25

539 10 18-81

539 10 57-44539 11 10-54 (x2)

539 10 83-85

539 11 11-28

15

ELECTRICAL COMPONENTS

PARK BRAKE

LEFT MOTIONCONTROL LEVER

ACCESSORY

TO STARTER ON ENGINETO KOHLER WIRING HARNESS

TO ELECTRIC CLUTCH

TOENGINEGROUND

RIGHT MOTIONCONTROL LEVER

539 10 24-63

539 10 10-80 (x3)

539 10 27-59 (x3)539 10 17-14

539 10 76-16 (x2)539 10 27-59 (x3)

539 10 17-68

539 10 25-40

539 10 75-44

539 10 75-41

539 10 96-36

539 10 56-37

539 10 75-16

539 10 76-15

539 10 29-14 (x3)539 10 17-71

539 10 20-86

539 10 75-23

539 10 76-16 (x2)

539 10 27-59 (x3)

16

48" DECK ASSEMBLY

539 10 76-26

539 10 15-72

539 10 76-04

539 11 04-62

539 10 76-09

539 10 76-27

539 10 76-31 (x4)539 10 80-25 (x2)

539 10 76-20

539 99 06-92 (x6)

539 99 07-30

539 10 32-95

539 10 32-57539 10 26-12

539 99 06-92 (x6)539 99 05-50

539 99 06-92 (x6)539 10 13-31

539 99 05-82539 10 32-57

539 10 97-80539 10 19-77

539 10 12-31539 10 22-43

539 97 69-79 (x6)

539 10 77-09539 10 78-03

539 99 01-96539 10 88-83539 99 07-17 (x5)

539 99 07-17 (x5)539 10 76-17

539 10 86-68

539 99 03-65 (x2)

539 99 01-22

539 10 76-08 (x4)

539 10 76-10 (x4)539 97 69-79 (x6)

539 10 99-89

539 10 76-13

539 10 79-60

539 10 76-12

539 99 03-65 (x2)539 99 07-99 (x3)

539 10 76-14

539 10 76-30 (x12)539 91 30-10

539 10 75-90 (x3)

539 10 75-21 (x3)

539 10 75-18 (x3)

539 10 75-20 (x6)

539 10 75-15 (x3)

539 10 75-19 (x3)539 10 75-22 (x3)

539 99 02-08

539 99 07-17 (x5)

539 99 06-92 (x6)

17

WIRING SCHEMATIC

18

539 10 00-32 BUSHING, NYLON FLANGED539 10 10-80 SWITCH, N.C.539 10 11-51 RETAINING RING539 10 11-73 NUT, LUG 1/2"539 10 12-31 IDLER SPINDLE539 10 12-32 BUSHING, FLANGED - PM539 10 13-31 NUT, 1/2C, NYLOC539 10 13-32 HCS 1/2C X 2 3/4539 10 14-74 ZERK539 10 15-72 HCS 1/2C X 3539 10 17-14 SOLENOID539 10 17-68 SWITCH, CLUTCH539 10 17-71 FUSE, 7.5 AMP539 10 18-36 BUSHING539 10 18-81 DECAL, PROP 65539 10 19-07 HCS 1/2C X 5 1/2539 10 19-49 E-RING, 1/2"539 10 19-77 SPRING, TRACTION539 10 19-95 KEY, 1/4” SQ. X 1 1/8”539 10 20-86 FUSE, 20 AMP539 10 22-43 SUPPORT WASHER539 10 24-63 BATTERY, WET539 10 25-02 STUD, 5/16C539 10 25-40 HOUR METER539 10 25-87 STOP, RUBBER539 10 25-90 BALL JOINT, RIGHT539 10 25-91 BALL JOINT, LEFT539 10 25-92 DRIVE LEVER CUSHION539 10 25-93 WASHER, 3/8 SPRING539 10 26-12 HCS 3/8C X 2 3/4539 10 26-78 TAPPED PLATE539 10 26-85 CLIP539 10 27-20 DAMPENER539 10 27-33 CHOKE CONTROL539 10 27-59 INSULATOR539 10 27-96 SPRING539 10 28-27 SPACER539 10 28-28 SHLD BOLT, 5/16C X 5/8539 10 28-45 SPRING, TANK MOUNT539 10 29-14 RELAY539 10 32-57 IDLER PULLEY539 10 32-75 THROTTLE CABLE

PARTS DESCRIPTION

19

539 10 32-95 IDLER BUSHING539 10 33-00 ZERK539 10 33-33 DECAL, MOTION CONTROL539 10 35-47 WASHER, 1/4539 10 44-09 FUEL TANK, LEFT539 10 44-11 KNOB W/STUD539 10 48-07 REINFORCEMENT BAR539 10 48-08 PILLOW BLOCK539 10 50-39 STUD PLATE MOUNT539 10 55-27 FUEL LINE, 24”539 10 55-43 SPACER539 10 56-37 CLUTCH HARNESS539 10 56-37 WIRING HARNESS, CLUTCH539 10 57-44 EURO DANGER DECAL, BELT DRIVES539 10 57-45 EURO DECAL, BATTERY WARNING539 10 58-04 CLUTCH, 125 FT/LB539 10 59-74 GROMMET, RUBBER539 10 61-88 FUEL CAP539 10 68-19 CLUTCH TIE DOWN WELDMENT539 10 69-93 TIRE (COMPLETE)539 10 69-94 RIM539 10 69-95 TIRE 410/350-5, 4 PLY539 10 70-98 CLAMP539 10 74-75 BOLT, 5/16-18 X 3/4, THREAD FORMING539 10 74-76 BOLT, 3/8-16 X 1, THREAD FORMING539 10 74-80 STRUT MOUNT539 10 74-84 EYE BOLT539 10 74-91 CASTER AXLE W/BUSHINGS539 10 74-94 CASTER WELDMENT539 10 74-98 BYPASS LINKAGE, RIGHT539 10 75-08 STRUT LINKAGE539 10 75-09 LIFT LINKAGE, LEFT, PRIMARY539 10 75-10 LIFT LINKAGE, RIGHT, PRIMARY539 10 75-15 CUTTER HOUSING ASM, INCLUDES:539 10 75-16 PIGTAIL539 10 75-18 STRIPPER, ROUND, UNIVERSAL539 10 75-19 BLADE, HIGH LIFT539 10 75-20 WASHER-SPACER539 10 75-21 PULLEY539 10 75-22 BOLT, 7/16, ASSY BLADE539 10 75-23 SWITCH, SEAT539 10 75-26 CONTROL LEVER

PARTS DESCRIPTION

20

539 10 75-35 CROSSSHAFT WLDMT.539 10 75-38 LIFT ARM WLDMT.539 10 75-41 SWITCH, IGNITION539 10 75-42 HEIGHT PLATE539 10 75-43 FOOT PEDAL WLDMT.539 10 75-44 KEY539 10 75-45 LIFT LINKAGE539 10 75-47 TIRE ASSEMBLY539 10 75-54 TIE ROD539 10 75-56 IZT SUPPORT539 10 75-57 PULLEY539 10 75-67 REAR BELLCRANK539 10 75-68 CONTROL PIVOT SHAFT539 10 75-75 BUMPER, REAR539 10 75-79 FRAME SIDE, RIGHT539 10 75-82 SEAT539 10 75-85 FOOT PLATE, FRONT539 10 75-87 PAN, FLOOR539 10 75-90 NUT, 9/16, TOP CENTER LOCK539 10 75-91 DECAL, CUTTING HEIGHT539 10 75-93 CONSOLE539 10 76-04 DISCHARGE CHUTE539 10 76-08 BOLT, SHOULDER539 10 76-09 SPRING, TORSION539 10 76-10 WHEEL, GAUGE539 10 76-12 ROLLER, NOSE, 48"539 10 76-13 ROD, ROLLER, NOSE, NARROW539 10 76-14 BAFFLE, VORTEX, MOWER539 10 76-15 BATTERY CABLE, NEGATIVE539 10 76-16 BATTERY CABLE, POSITIVE539 10 76-17 BUSHING, PIVOT, TENSION RELIEF539 10 76-20 PULLEY, IDLER539 10 76-26 PUSHNUT539 10 76-27 CAP-SLEEVE539 10 76-28 BATTERY HOLD DOWN539 10 76-29 PUSH NUT, NYLON539 10 76-30 SCREW, WASHER HEAD539 10 76-31 SCREW, 1/4-20 X 5/8, THDROLL539 10 76-32 BOLT, 1/4-20 X 7 1/2539 10 76-97 CLEVIS PIN539 10 77-03 SWIVEL539 10 77-06 HCS 1/2C X 2 1/4

PARTS DESCRIPTION

21

539 10 77-09 DECK BELT539 10 77-10 IZT PUMP BELT539 10 78-03 TENSION RELIEF LINKAGE539 10 78-04 VALVE, FUEL539 10 79-21 RETAINER539 10 79-25 DECAL, SERVICE539 10 79-31 BYPASS LINKAGE, LEFT539 10 79-37 HOSE, OIL DRAIN539 10 79-58 FOOT PAD539 10 79-59 DECAL, WARNING539 10 79-60 DECAL, BELT ROUTING539 10 79-68 SEAT MOUNT W/DECALS539 10 80-02 HCS 5/16C X 2 1/4, GR. 8539 10 80-08 RIM539 10 80-09 TIRE539 10 80-25 BELT SHIELD539 10 80-72 DAMPENER BRACKET539 10 81-20 JAM NUTS, 1/4C, NYLOC539 10 81-20 NUT, 1/4C, NYLOC539 10 81-79 DECAL, START539 10 82-42 STIFFENER539 10 82-66 WASHER, 3/8, INTERNAL TOOTH539 10 83-85 DECAL, DO NOT TOW539 10 83-86 DECAL, DRIVE LEVER539 10 86-68 TENSION RELIEF LEVER539 10 88-83 SWIVEL539 10 92-73 ROLL PIN539 10 93-49 BATTERY SUPPORT, RIGHT539 10 93-51 BATTERY SUPPORT, LEFT539 10 93-56 DRIVE BELLCRANK539 10 93-60 LINKAGE539 10 93-61 DRIVE LINKAGE, RIGHT539 10 93-62 DRIVE LINKAGE, LEFT539 10 93-63 BRAKE LEVER539 10 93-65 BRAKE BELLCRANK, RIGHT539 10 93-66 BRAKE BELLCRANK, LEFT539 10 93-67 SHAFT, BRAKE CROSS539 10 93-68 BUSHING, PLASTIC FLANGED539 10 93-69 LINKAGE, MAIN539 10 93-70 LINKAGE539 10 93-73 PIVOT SHAFT539 10 96-19 OVERCENTER STOP539 10 96-20 CONNECTING LINK539 10 96-33 FRAME SIDE, LEFT539 10 96-36 WIRING HARNESS539 10 96-37 IZT LEFT539 10 96-38 IZT RIGHT

PARTS DESCRIPTION

22

539 10 96-40 CONTROL BRACKET, LEFT539 10 96-42 CONTROL BRACKET, RIGHT539 10 96-49 CONTROL ARM539 10 97-51 SWITCH ACTUATOR, LEFT539 10 97-52 SWITCH ACTUATOR, RIGHT539 10 97-80 DECK IDLER ARM WLDMT.539 10 97-81 PUMP IDLER ARM539 10 97-98 GRIP, PARK BRAKE539 10 98-38 DECAL, THROTTLE539 10 98-43 MUFFLER539 10 98-44 MANIFOLD539 10 98-58 CONTROL CONSOLE539 10 99-80 CLAMP, EXHAUST (NOT SHOWN)539 10 99-88 MAINFRAME W/DECALS539 10 99-89 DECK W/DECAL539 10 99-90 SEAT SUPPORT W/DECALS539 11 00-37 DRAIN VALVE539 11 04-62 ROD, HINGE539 11 10-47 DECAL, HUSQVARNA539 11 10-54 DECAL, CROWN539 11 11-27 DECAL, Z4818, RIGHT539 11 11-28 DECAL, Z4818, LEFT539 91 22-22 HOSE CLAMP539 91 22-34 VALVE STEM539 91 30-10 DECAL, CPSC539 97 69-34 HCS 5/16C X 3/4539 97 69-41 HCS 3/8C X 1 1/4539 97 69-49 HCS 3/8C X 1 3/4539 97 69-52 SCREW, #10-24 X 5/8, MACH.539 97 69-77 NUT #10-24, NYLOC539 97 69-78 NUT, 1/4C, NYLOC539 97 69-79 NUT, 3/8C, NYLOC539 97 69-88 HAIRPIN COTTER539 97 74-65 YOKE539 97 77-03 CLEVIS PIN539 97 77-78 ABRASIVE PAD539 99 01-22 WASHER, 3/8, SAE539 99 01-34 HCS 3/8C X 3/4539 99 01-55 NUT, 3/8F539 99 01-87 LOCK WASHER, 5/16

PARTS DESCRIPTION

23

539 99 01-87 LOCKWASHER 5/16539 99 01-96 NUT, 5/16C539 99 02-08 RHSNB 5/16C X 1539 99 02-23 NUT, 5/16F539 99 02-47 LOCKWASHER, 7/16539 99 03-62 SCREW 1/4C X 5/8, SELF TAPPING539 99 03-65 PIN, COTTER, 1/8 X 3/4539 99 04-11 SCREW #10-24 X 1/2539 99 05-17 WASHER, 3/8, FLAT539 99 05-50 WASHER, 1/2, FLAT539 99 05-63 HCS, 3/8C X 1539 99 05-82 HCS 3/8C X 1, SERRATED HEAD539 99 06-13 NUT, 3/8C, SERR WASHER539 99 06-27 HCS, 5/16C X 1 1/4539 99 06-29 HCS, 3/8C X 2 1/4539 99 06-54 COTTER PIN, 5/32 X 1 1/8539 99 06-92 WASHER, 5/16, FLAT539 99 07-17 NUT, 5/16C, NYLOC539 99 07-30 HCS, 3/8-16 X 1 3/4539 99 07-99 BOLT, 5/16C X 5/8, CARRIAGE539 99 10-34 SCREW 10-24 X 1/2, SELF TAPPING539 99 10-46 HCS 5/16C X 2 1/2539 99 10-73 NUT, 5/16F, LH JAM539 99 11-20 HCS 7/16-20 X 2 1/2, GR5539 99 02-50 WASHER, 1/2 SAE

BALL BEARINGS, MANDREL ASM,SHAFT ASM W/LOWER BEARING

PARTS DESCRIPTION