Parts Manual Models: 968999250 / Z4818BIA MANUAL NO. 539109796 REV. IR (09/18/04)
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INDEX MAIN FRAME ASSEMBLY... 4-5 BRAKE LINKAGE... 6 CONSOLE ASSEMBLY... 7 CASTER ASSEMBLY... 8 MOTION CONTROL ASSEMBLY... 9 MOTION CONTROL LEVERS... 10 DECK LIFT ASSEMBLY... 11 IZT ASSEMBLY... 12 ENGINE ASSEMBLY... 13 DECAL PLACEMENT... 14 ELECTRICAL COMPONENTS... 15 48" DECK ASSEMBLY... 16 WIRING SCHEMATIC... 17 PARTS DESCRIPTION... 18-23 2004 Husqvarna. All Rights Reserved. Beatrice, NE. Printed in U.S.A. 3
MAIN FRAME ASSEMBLY 539 10 61-88 539 10 44 09 539 10 78-04 539 10 28-45 (x8) 539 99 07-17 (x13) 539 10 81-20 (x5) ENGINE STARTER STUD 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 97 69-79 (x9) 539 99 10-34 (x4) 539 97 69-78 (x4) 539 10 50-39 (x2) 539 10 59-74 (x2) 539 99 03-62 (x2) 539 10 27-59 (x3) 539 97 69-78 (x4) 539 10 17-14 539 10 99-88 539 10 74-75 (x44) 539 10 75-85 539 10 74-75 (x44) 539 99 06-13 539 99 06-29 539 10 19-77 539 10 13-31 539 10 12-31 539 10 97-81 539 10 13-31 (x3) 539 10 11-51 (x2) 539 10 12-32 (x4) 539 10 74-91 539 10 74-80 539 97 69-49 539 99 06-92 (x23) 539 10 76-20 539 99 05-50 (x3) 539 10 12-32 (x4) 539 97 69-79 539 99 05-50 539 10 13-32 539 10 74-75 (x44) 539 10 25-87 (x4) 539 10 75-79 539 10 00-32 (x5) 539 10 14-74 (x2) REF. CASTER ASSEMBLY (TWO PER UNIT) 4
MAIN FRAME ASSEMBLY 539 10 75-82 59 55 539 99 06-92 (x4) 539 10 79-68 539 10 75-23 539 10 44-11 (x4) 539 99 01-34 (x2) 539 10 26-85 539 97 69-79 (x9) 539 10 74-75 (x44) 539 10 99-90 539 10 74-75 (x44) 539 10 75-87 539 97 77-78 (x3) 539 10 11-73 (x8) 539 10 25-87 (x4) 539 10 80-09 539 10 80-08 539 91 22-34 539 10 96-33 539 10 74-75 (x44) 539 10 00-32 (x5) 539 10 75-47 (x2) 539 10 74-75 (x44) 539 10 25-87 (x4) 539 10 75-79 539 10 00-32 (x5) 5
BRAKE LINKAGE 539 97 69-52 (x2) 539 10 10-80 539 10 26-78 539 10 93-65 539 10 92-73 (x2) 539 10 93-67 539 10 93-68 (x2) 539 10 92-73 (x2) 539 10 93-66 539 10 93-68 (x2) 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 69-79 (x4) 539 10 96-19 539 99 05-17 539 10 18-36 539 10 93-63 539 99 05-17 539 99 06-29 539 10 93-69 539 10 96-20 (x2) 539 10 97-98 539 99 01-55 (x7) 539 97 74-65 (x2) 539 97 77-03 (x3) 539 99 03-65 (x3) 6
CONSOLE ASSEMBLY 539 10 27-33 539 10 25-40 539 10 75-44 539 10 17-68 539 10 75-41 539 99 04-11 (x6) 539 99 04-11 (x6) 539 10 98-58 539 10 79-57 539 10 75-83 539 97 69-77 (x2) 539 10 75-93 7
CASTER ASSEMBLY 539 10 13-31 539 10 74-94 539 10 19-07 539 10 55-43 539 91 22-34 539 10 33-00 539 10 69-95 539 10 69-94 539 10 69-93 8
MOTION CONTROL ASSEMBLY 539 10 93-56 (x2) 539 99 06-92 (x26) 539 97 69-88 (x4) 539 99 07-17 (x12) 539 10 00-32 (x5) 539 99 06-92 (x26) 539 10 25-90 (x2) 539 99 06-27 (x4) 539 99 02-23 (x6) 539 10 93-73 (x2) 539 10 19-49 (x6) 539 10 81-20 (x4) 539 10 19-49 (x6) 539 10 93-62 539 10 00-32 (x5) 539 10 25-92 (x2) 539 10 75-26 (x2) 539 10 82-42 (x2) 539 10 25-93 (x4) 539 99 05-63 (x4) TO LEFT IZT REF. 539 10 75-68 539 10 93-60 (x2) 539 10 00-32 (x5) 539 97 69-88 (x4) 539 99 06-92 (x26) 539 10 00-32 (x5) 539 10 19-49 (x6) TO RIGHT IZT 539 10 93-61 REF. 539 99 07-17 (x12) 539 99 06-92 (x26) 539 10 00-32 (x5) REF. 539 10 25-91 (x2) 539 10 76-32 (x2) 539 10 76-29 (x2) REF. 539 10 76-28 539 10 24-63 539 10 28-27 (x4) 539 99 06-27 (x4) 539 10 19-49 (x6) 539 99 10-73 (x2) 539 10 93-51 539 10 74-75 (x4) 539 10 93-49 539 10 19-49 (x6) 539 10 74-75 (x4) 539 10 35-47 (x4) 539 10 28-28 (x4) 539 10 81-20 (x4) 539 10 00-32 (x5) REF. 539 10 27-20 (x2) 539 10 19-49 (x6) 539 10 28-28 (x4) 539 10 28-27 (x4) 539 10 35-47 (x4) 539 10 80-72 (x2) 9
MOTION CONTROL LEVERS 539 10 96-49 (x2) 539 10 00-32 (x4) 539 99 01-22 (x2) 539 97 69-79 (x4) 539 10 97-52 539 97 69-79 (x4) 539 10 96-49 (x2) 539 10 96-42 539 10 00-32 (x4) 539 10 96-40 539 10 10-80 (x2) 539 10 00-32 (x4) 539 99 10-34 (x4) 539 10 10-80 (x2) 539 99 10-34 (x4) 539 99 07-30 (x4) REF. 539 10 00-32 (x4) 539 99 07-30 (x4) 539 10 97-51 539 99 01-22 (x2) 10
DECK LIFT ASSEMBLY REF. 539 97 69-79 (x9) 539 99 07-17 (x13) REF. 539 10 48-08 (x4) 539 99 03-65 (x15) 539 10 75-45 (x2) 539 10 48-07 (x2) 539 10 75-91 539 99 10-46 (x4) 539 10 75-42 539 99 03-65 (x15) 539 99 05-17 (x8) 539 97 69-41 (x2) 539 99 05-17 (x8) 539 99 05-17 (x8) 539 99 03-65 (x15) 539 10 75-67 (x2) 539 10 76-97 (x2) 539 10 75-09 539 10 75-10 539 10 75-43 539 10 79-58 539 10 75-38 539 10 77-03 (x4) 539 97 69-79 (x9) 539 10 19-49 (x6) 539 10 00-32 (x5) 539 97 69-79 (x9) REF. 539 10 77-03 (x4) 539 99 06-54 (x4) 539 99 05-17 (x8) 539 10 74-84 (x2) 539 99 02-50 (x4) 539 99 06-54 (x4) 11 539 97 69-79 (x9) 539 10 75-35 539 99 02-50 (x4) 539 99 06-54 (x4) 539 10 75-08 (x2)
IZT ASSEMBLY (Integraded Zeroturn Transaxle) 539 10 77-10 539 99 07-17 (x11) 539 10 79-31 539 10 79-21 (x2) 539 10 96-37 539 10 80-02 (x2) 539 10 74-98 539 97 69-88 (x2) 539 10 75-54 539 10 96-38 539 99 06-92 (x14) 539 99 10-46 (x10) 539 99 06-92 (x14) 539 99 01-87 (x2) 539 10 80-02 (x2) 539 99 07-17 (x11) 539 99 06-92 (x14) 539 99 07-17 (x11) 539 99 01-87 (x2) 539 99 06-92 (x14) 539 99 10-46 (x10) 539 10 75-56 12
BRIGGS & STRATTON ENGINE ASSEMBLY GROUND WIRES MOUNTED TO SHROUD BOLT USE SHROUD BOLTS TO MOUNT 539 10 82-66 539 10 70-98 (x2) 539 11 00-93 539 10 98-37 539 10 98-44 TO FUEL VALVE 539 10 68-19 539 10 79-37 539 10 55-27 TO FUEL FILTER 539 10 74-76 (x4) 539 10 99-80 539 10 19-95 539 91 22-22 (x2) 539 10 75-57 539 10 98-43 539 10 58-04 539 10 56-37 539 99 02-47 539 99 11-20 TORQUE TO 45 FT./LBS. TURNED SHOULDER ON PULLEY HUB MUST FACE THE CLUTCH 539 10 75-16 CLAMP, EXHAUST (NOT SHOWN) 13
DECAL PLACEMENT 539 11 10-54 (x2) 539 10 57-44 539 10 79-25 539 10 18-81 539 10 57-45 12 539 10 79-59 539 10 33-33 (x2) 539 97 77-78 (x3) 539 11 11-28 539 10 83-85 539 10 33-33 (x2) 539 10 83-86 539 10 81-79 539 11 11-27 539 10 75-91 539 11 10-47 (x2) 14
ELECTRICAL COMPONENTS 539 10 20-86 539 10 17-71 539 10 29-14 (x3) 539 10 17-68 539 10 75-23 RIGHT MOTION CONTROL LEVER 539 10 25-40 539 10 75-44 539 10 10-80 (x3) 539 10 75-41 PARK BRAKE TO ENGINE GROUND LEFT MOTION CONTROL LEVER ACCESSORY 539 10 96-36 539 10 56-37 539 10 76-16 (x2) 539 10 27-59 (x3) 539 10 24-63 539 10 27-59 (x3) 539 10 17-14 539 10 76-16 (x2) 539 10 27-59 (x3) 539 10 76-15 TO ELECTRIC CLUTCH TO KOHLER WIRING HARNESS TO STARTER ON ENGINE 539 10 75-16 15
48" DECK ASSEMBLY 539 10 76-04 539 10 32-57 539 10 76-26 539 10 32-95 539 99 07-30 539 99 06-92 (x6) 539 10 76-20 539 10 26-12 539 99 06-92 (x6) 539 99 05-50 539 10 13-31 539 99 06-92 (x6) 539 99 05-82 539 10 32-57 539 10 97-80 539 10 19-77 539 10 76-27 539 10 76-09 539 11 04-62 539 10 76-31 (x4) 539 10 80-25 (x2) 539 99 06-92 (x6) 539 10 76-30 (x12) 539 91 30-10 539 10 12-31 539 10 22-43 539 10 15-72 539 10 88-83 539 99 01-96 539 10 78-03 539 10 77-09 539 99 07-17 (x5) 539 97 69-79 (x6) 539 99 07-17 (x5) 539 10 76-17 539 10 86-68 539 99 07-17 (x5) 539 99 03-65 (x2) 539 99 07-99 (x3) 539 10 76-14 539 10 76-12 539 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 79-60 539 10 76-13 539 10 99-89 539 97 69-79 (x6) 539 10 76-10 (x4) 539 10 76-08 (x4) 539 99 02-08 539 99 03-65 (x2) 539 99 01-22 539 10 75-19 (x3) 539 10 75-22 (x3) 16
WIRING SCHEMATIC 17
PARTS DESCRIPTION 539 10 00-32 BUSHING, NYLON FLANGED 539 10 10-80 SWITCH, N.C. 539 10 11-51 RETAINING RING 539 10 11-73 NUT, LUG 1/2" 539 10 12-31 IDLER SPINDLE 539 10 12-32 BUSHING, FLANGED - PM 539 10 13-31 NUT, 1/2C, NYLOC 539 10 13-32 HCS 1/2C X 2 3/4 539 10 14-74 ZERK 539 10 15-72 HCS 1/2C X 3 539 10 17-14 SOLENOID 539 10 17-68 SWITCH, CLUTCH 539 10 17-71 FUSE, 7.5 AMP 539 10 18-36 BUSHING 539 10 18-81 DECAL, PROP 65 539 10 19-07 HCS 1/2C X 5 1/2 539 10 19-49 E-RING, 1/2" 539 10 19-77 SPRING, TRACTION 539 10 19-95 KEY, 1/4 SQ. X 1 1/8 539 10 20-86 FUSE, 20 AMP 539 10 22-43 SUPPORT WASHER 539 10 24-63 BATTERY, WET 539 10 25-02 STUD, 5/16C 539 10 25-40 HOUR METER 539 10 25-87 STOP, RUBBER 539 10 25-90 BALL JOINT, RIGHT 539 10 25-91 BALL JOINT, LEFT 539 10 25-92 DRIVE LEVER CUSHION 539 10 25-93 WASHER, 3/8 SPRING 539 10 26-12 HCS 3/8C X 2 3/4 539 10 26-78 TAPPED PLATE 539 10 26-85 CLIP 539 10 27-20 DAMPENER 539 10 27-33 CHOKE CONTROL 539 10 27-59 INSULATOR 539 10 27-96 SPRING 539 10 28-27 SPACER 539 10 28-28 SHLD BOLT, 5/16C X 5/8 539 10 28-45 SPRING, TANK MOUNT 539 10 29-14 RELAY 539 10 32-57 IDLER PULLEY 539 10 32-75 THROTTLE CABLE 18
PARTS DESCRIPTION 539 10 32-95 IDLER BUSHING 539 10 33-00 ZERK 539 10 33-33 DECAL, MOTION CONTROL 539 10 35-47 WASHER, 1/4 539 10 44-09 FUEL TANK, LEFT 539 10 44-11 KNOB W/STUD 539 10 48-07 REINFORCEMENT BAR 539 10 48-08 PILLOW BLOCK 539 10 50-39 STUD PLATE MOUNT 539 10 55-27 FUEL LINE, 24 539 10 55-43 SPACER 539 10 56-37 CLUTCH HARNESS 539 10 56-37 WIRING HARNESS, CLUTCH 539 10 57-44 EURO DANGER DECAL, BELT DRIVES 539 10 57-45 EURO DECAL, BATTERY WARNING 539 10 58-04 CLUTCH, 125 FT/LB 539 10 59-74 GROMMET, RUBBER 539 10 61-88 FUEL CAP 539 10 68-19 CLUTCH TIE DOWN WELDMENT 539 10 69-93 TIRE (COMPLETE) 539 10 69-94 RIM 539 10 69-95 TIRE 410/350-5, 4 PLY 539 10 70-98 CLAMP 539 10 74-75 BOLT, 5/16-18 X 3/4, THREAD FORMING 539 10 74-76 BOLT, 3/8-16 X 1, THREAD FORMING 539 10 74-80 STRUT MOUNT 539 10 74-84 EYE BOLT 539 10 74-91 CASTER AXLE W/BUSHINGS 539 10 74-94 CASTER WELDMENT 539 10 74-98 BYPASS LINKAGE, RIGHT 539 10 75-08 STRUT LINKAGE 539 10 75-09 LIFT LINKAGE, LEFT, PRIMARY 539 10 75-10 LIFT LINKAGE, RIGHT, PRIMARY 539 10 75-15 CUTTER HOUSING ASM, INCLUDES: 539 10 75-16 PIGTAIL 539 10 75-18 STRIPPER, ROUND, UNIVERSAL 539 10 75-19 BLADE, HIGH LIFT 539 10 75-20 WASHER-SPACER 539 10 75-21 PULLEY 539 10 75-22 BOLT, 7/16, ASSY BLADE 539 10 75-23 SWITCH, SEAT 539 10 75-26 CONTROL LEVER 19
PARTS DESCRIPTION 539 10 75-35 CROSSSHAFT WLDMT. 539 10 75-38 LIFT ARM WLDMT. 539 10 75-41 SWITCH, IGNITION 539 10 75-42 HEIGHT PLATE 539 10 75-43 FOOT PEDAL WLDMT. 539 10 75-44 KEY 539 10 75-45 LIFT LINKAGE 539 10 75-47 TIRE ASSEMBLY 539 10 75-54 TIE ROD 539 10 75-56 IZT SUPPORT 539 10 75-57 PULLEY 539 10 75-67 REAR BELLCRANK 539 10 75-68 CONTROL PIVOT SHAFT 539 10 75-75 BUMPER, REAR 539 10 75-79 FRAME SIDE, RIGHT 539 10 75-82 SEAT 539 10 75-85 FOOT PLATE, FRONT 539 10 75-87 PAN, FLOOR 539 10 75-90 NUT, 9/16, TOP CENTER LOCK 539 10 75-91 DECAL, CUTTING HEIGHT 539 10 75-93 CONSOLE 539 10 76-04 DISCHARGE CHUTE 539 10 76-08 BOLT, SHOULDER 539 10 76-09 SPRING, TORSION 539 10 76-10 WHEEL, GAUGE 539 10 76-12 ROLLER, NOSE, 48" 539 10 76-13 ROD, ROLLER, NOSE, NARROW 539 10 76-14 BAFFLE, VORTEX, MOWER 539 10 76-15 BATTERY CABLE, NEGATIVE 539 10 76-16 BATTERY CABLE, POSITIVE 539 10 76-17 BUSHING, PIVOT, TENSION RELIEF 539 10 76-20 PULLEY, IDLER 539 10 76-26 PUSHNUT 539 10 76-27 CAP-SLEEVE 539 10 76-28 BATTERY HOLD DOWN 539 10 76-29 PUSH NUT, NYLON 539 10 76-30 SCREW, WASHER HEAD 539 10 76-31 SCREW, 1/4-20 X 5/8, THDROLL 539 10 76-32 BOLT, 1/4-20 X 7 1/2 539 10 76-97 CLEVIS PIN 539 10 77-03 SWIVEL 539 10 77-06 HCS 1/2C X 2 1/4 20
PARTS DESCRIPTION 539 10 77-09 DECK BELT 539 10 77-10 IZT PUMP BELT 539 10 78-03 TENSION RELIEF LINKAGE 539 10 78-04 VALVE, FUEL 539 10 79-21 RETAINER 539 10 79-25 DECAL, SERVICE 539 10 79-31 BYPASS LINKAGE, LEFT 539 10 79-37 HOSE, OIL DRAIN 539 10 79-58 FOOT PAD 539 10 79-59 DECAL, WARNING 539 10 79-60 DECAL, BELT ROUTING 539 10 79-68 SEAT MOUNT W/DECALS 539 10 80-02 HCS 5/16C X 2 1/4, GR. 8 539 10 80-08 RIM 539 10 80-09 TIRE 539 10 80-25 BELT SHIELD 539 10 80-72 DAMPENER BRACKET 539 10 81-20 JAM NUTS, 1/4C, NYLOC 539 10 81-20 NUT, 1/4C, NYLOC 539 10 81-79 DECAL, START 539 10 82-42 STIFFENER 539 10 82-66 WASHER, 3/8, INTERNAL TOOTH 539 10 83-85 DECAL, DO NOT TOW 539 10 83-86 DECAL, DRIVE LEVER 539 10 86-68 TENSION RELIEF LEVER 539 10 88-83 SWIVEL 539 10 92-73 ROLL PIN 539 10 93-49 BATTERY SUPPORT, RIGHT 539 10 93-51 BATTERY SUPPORT, LEFT 539 10 93-56 DRIVE BELLCRANK 539 10 93-60 LINKAGE 539 10 93-61 DRIVE LINKAGE, RIGHT 539 10 93-62 DRIVE LINKAGE, LEFT 539 10 93-63 BRAKE LEVER 539 10 93-65 BRAKE BELLCRANK, RIGHT 539 10 93-66 BRAKE BELLCRANK, LEFT 539 10 93-67 SHAFT, BRAKE CROSS 539 10 93-68 BUSHING, PLASTIC FLANGED 539 10 93-69 LINKAGE, MAIN 539 10 93-70 LINKAGE 539 10 93-73 PIVOT SHAFT 539 10 96-19 OVERCENTER STOP 539 10 96-20 CONNECTING LINK 539 10 96-33 FRAME SIDE, LEFT 539 10 96-36 WIRING HARNESS 539 10 96-37 IZT LEFT 539 10 96-38 IZT RIGHT 21
PARTS DESCRIPTION 539 10 96-40 CONTROL BRACKET, LEFT 539 10 96-42 CONTROL BRACKET, RIGHT 539 10 96-49 CONTROL ARM 539 10 97-51 SWITCH ACTUATOR, LEFT 539 10 97-52 SWITCH ACTUATOR, RIGHT 539 10 97-80 DECK IDLER ARM WLDMT. 539 10 97-81 PUMP IDLER ARM 539 10 97-98 GRIP, PARK BRAKE 539 10 98-38 DECAL, THROTTLE 539 10 98-43 MUFFLER 539 10 98-44 MANIFOLD 539 10 98-58 CONTROL CONSOLE 539 10 99-80 CLAMP, EXHAUST (NOT SHOWN) 539 10 99-88 MAINFRAME W/DECALS 539 10 99-89 DECK W/DECAL 539 10 99-90 SEAT SUPPORT W/DECALS 539 11 00-37 DRAIN VALVE 539 11 04-62 ROD, HINGE 539 11 10-47 DECAL, HUSQVARNA 539 11 10-54 DECAL, CROWN 539 11 11-27 DECAL, Z4818, RIGHT 539 11 11-28 DECAL, Z4818, LEFT 539 91 22-22 HOSE CLAMP 539 91 22-34 VALVE STEM 539 91 30-10 DECAL, CPSC 539 97 69-34 HCS 5/16C X 3/4 539 97 69-41 HCS 3/8C X 1 1/4 539 97 69-49 HCS 3/8C X 1 3/4 539 97 69-52 SCREW, #10-24 X 5/8, MACH. 539 97 69-77 NUT #10-24, NYLOC 539 97 69-78 NUT, 1/4C, NYLOC 539 97 69-79 NUT, 3/8C, NYLOC 539 97 69-88 HAIRPIN COTTER 539 97 74-65 YOKE 539 97 77-03 CLEVIS PIN 539 97 77-78 ABRASIVE PAD 539 99 01-22 WASHER, 3/8, SAE 539 99 01-34 HCS 3/8C X 3/4 539 99 01-55 NUT, 3/8F 539 99 01-87 LOCK WASHER, 5/16 22
PARTS DESCRIPTION 539 99 01-87 LOCKWASHER 5/16 539 99 01-96 NUT, 5/16C 539 99 02-08 RHSNB 5/16C X 1 539 99 02-23 NUT, 5/16F 539 99 02-47 LOCKWASHER, 7/16 539 99 03-62 SCREW 1/4C X 5/8, SELF TAPPING 539 99 03-65 PIN, COTTER, 1/8 X 3/4 539 99 04-11 SCREW #10-24 X 1/2 539 99 05-17 WASHER, 3/8, FLAT 539 99 05-50 WASHER, 1/2, FLAT 539 99 05-63 HCS, 3/8C X 1 539 99 05-82 HCS 3/8C X 1, SERRATED HEAD 539 99 06-13 NUT, 3/8C, SERR WASHER 539 99 06-27 HCS, 5/16C X 1 1/4 539 99 06-29 HCS, 3/8C X 2 1/4 539 99 06-54 COTTER PIN, 5/32 X 1 1/8 539 99 06-92 WASHER, 5/16, FLAT 539 99 07-17 NUT, 5/16C, NYLOC 539 99 07-30 HCS, 3/8-16 X 1 3/4 539 99 07-99 BOLT, 5/16C X 5/8, CARRIAGE 539 99 10-34 SCREW 10-24 X 1/2, SELF TAPPING 539 99 10-46 HCS 5/16C X 2 1/2 539 99 10-73 NUT, 5/16F, LH JAM 539 99 11-20 HCS 7/16-20 X 2 1/2, GR5 539 99 02-50 WASHER, 1/2 SAE BALL BEARINGS, MANDREL ASM, SHAFT ASM W/LOWER BEARING 23