
YGTB18546A (1999) Page 1 of 25
CHASSIS AND ENCLOSURES

YGTB18546A (1999) Page 2 of 25
CHASSIS AND ENCLOSURES
Ref # Part Number Qty Description
1 165480 CHASSIS.STAMPING
2 140356 SUB= 145009
3 17490612 SCREW
4 19131216 WASHER
5 155272 BUMPER-HOOD/DASH
6 155923 SADDLE
8 126471X "CLIP,INSULATOR"
9 154587X011 DASH.PANEL.ASSY
10 72140608 SUB= 72110608
11 156682 PANEL ASM DASH LH
12 145660 CLIP.TINNERMAN
13 157230 PANEL DASH RH
14 17490608 SCREW LT
15 74180512 SCREW
16 73510500 NUT
17 159639X428 "HOOD W/TRIM,MS428"
18 126938X SUB= 532126938
20 156347 "STRAP-TORQUE,RH"
23 124028X SUB= 532124028
24 74780616 BOLT
25 19131312 WASHER
26 73800600 NUT
28 157428 GRILL
29 146654X599 GRILLE.LENS
30 140002X428 "FENDER WS,FTK"
31 137113 BRKT.ASM.FENDER
33 145244X428 FOOTREST PNT LH
34 145243X428 FOOTREST.RH.LT/GT
35 72110606 BOLT
36 108067X PAL NUT LT
37 17490508 SCREW LT
38 139886 BRACKET ASM LH
39 139887 BRACKET ASM RH
43 17490612 SCREW
44 140675 STRAP ASM FENDER
45 147717 BEZEL.ASM.
47 105531X NUT-PUSH YT
50 145205 DASH.SUPT.YP/HUSQ
51 73800400 NUT
52 19091416 WASHER
53 144697 BRACKET.GRILLE.LH
54 161464 SCREW.HEX.WS.HD
55 144696 BRACKET.GRILLE.RH
56 150271 EXT DASH LTYT
57 74780412 SUB= 74780414
58 140547 DUCT.AIR.B&S.18HP
59 110436X SUB= 9151R
64 150272 DASH.LOWER.LT
66 156286X010 "PLATE DASH,SLKSCR"
67 19111116 WASHER
72 144916X428 STRAP-GRILLE
74 73680600 SUB= 73690600
77 74191008 SCREW
79 2029J WELDNUT
80 109808X HOOD LATCH T
82 74981020 SCREW
83 7206J SPACER LT
85 73731000 NUT

YGTB18546A (1999) Page 3 of 25
CHASSIS AND ENCLOSURES
Ref # Part Number Qty Description
86 150303X428 "PANEL ASM SIDE,RH"
87 150302X428 "PANEL ASM-SIDE,LH"
90 19091216 WASHER PM
91 73220400 SUB= 50675
92 10040400 LOCKWASHER
108 74760612 SUB= 74780612
135 74291006 SCREW.10-24X3/8.
136 60867 ACORN NUT RB
137 110356X SNAP CAP LT
138 110357X WASHER LT
139 150195 BKT.SPT.HOOD/PANL
140 158418 BRKT SUSPENSION
145 156524 "ROD POVOT,CHASSIS"
152 17720408 SCREW
121794X COVER ACCESS
8022J PLUG-DASH T

YGTB18546A (1999) Page 4 of 25
DECALS

YGTB18546A (1999) Page 5 of 25
DECALS
Ref # Part Number Qty Description
1 156412 DECAL FENDER
2 159210 DECAL LENS
3 159950 DECAL HOOD LH18.6
4 159947 DECAL HOOD RH18.5
5 165358 DECAL.HP.ENGINE
6 157163 "DECAL.OPER,SDL"
7 157140 DECAL.CAUT.ENG/FR
8 101892X DECAL T
9 157582 "DECAL CHASSIS,46"""
10 160397 SUB= 532160397
11 159211 "DECAL INSERT,STRG"
13 106202X REFLECTOR-TAIL YT
14 145005 DECAL.BATRY.3-3908
15 137259 "DECAL, WARNING"
133671 FOOTREST PAD
138311 DECAL HANDLE LIFT
169012 MANUAL.O.YGTB18546A
169013 MANUAL, OWNER'S

YGTB18546A (1999) Page 6 of 25
DRIVE

YGTB18546A (1999) Page 7 of 25
DRIVE
Ref # Part Number Qty Description
1 SUPPLIER CHECK WITH SUPPLIER
2 110422X SUB= 146682
3 121327X PULLEY TRANSAXLE
4 12000004 RING
5 123787X STRAP TORQUE
6 17490512 SCREW
8 166020 ROD.SHIFT.FEND.ADJ.YT
9 160889 CLUTCH.ELECTRIC
10 76020416 PIN COTTER 1/8
11 105701X WASH-SHFT PLT LT
13 74550412 BOLT.1/4-28.W/PAT
14 10040400 LOCKWASHER
16 73800500 NUT
19 73800600 NUT
20 150280 BOLT.7/16-20X4.25
21 121274X KNOB.DUCKHEAD.1/2
22 145340 ROD.ASM.BK.44.MWR
23 154978 BRACKET.CLUT.MTG.
24 73350600 NUT
25 126909X "SPRING,ROD BRAKE"
26 19131316 WASHER
27 76020412 COTTER PIN
28 145204 ROD.BRAKE.PARK.LT
29 71673 PLUNGER CAP T
30 123780X BRKT TRANS LH
31 123791X KEEPER BELT LH
33 72140506 BOLT
34 155071 SHAFT ASM-PEDAL F
35 120183X NYLON BEARING
36 19211616 WASHER LT
37 1572H SUB= 2882J
38 131494 FLAT IDLER PULLEY
39 74760644 BOLT
40 4470J SPACER T
41 165838 "KEEPER,BELT.IDLER FLAT"
42 19131312 WASHER
47 127783 SUB= 139245
48 154407 BELLCRANK.CLUTCH
49 123205X RETAIN BELT
50 74760624 SUB= 74930624
51 73680600 SUB= 73690600
52 73680500 SUB= 73690500
53 105710X "LINK, CLUTCH T"
54 126471X "CLIP,INSULATOR"
55 105709X "SPRING, RETURN LT"
56 74760620 SUB= 74780620
57 163817 V-BELT.DRIVE
58 123792X "KEEPER,BELT RH"
59 140312 KEEPER BELT CNTSP
61 17490612 SCREW
62 123533X "COVER,PEDAL"
63 145868 PULLEY.CLUTCH.EVX
65 10040700 LOCKWASHER
66 154778 KEEPER-BELT
74 108097X SPACER HYT
75 123800X WASHER
76 12000053 E RING HYT
77 9396E SQ KEY STD

YGTB18546A (1999) Page 8 of 25
DRIVE
Ref # Part Number Qty Description
79 2228M SUB= 2228M1
80 123794X "ARM,SHIFT"
81 165601 SHAFT ASM. CROSS TAPERED
82 123782X "SPRING,TORSION"
83 19171216 WASHER
84 166230 LINK TRANSAXLE
85 150360 NUT.CNT.LOCK.1/4
89 139992X428 CONSOLE.SHIFT.6SP.GTV.BLACK
90 124346X NUT
96 4497H RETAINER M
100 19111216 WASHER M
110 74760612 SUB= 74780612
111 123776X BRKT TRANS RH
117 19091216 WASHER PM
145 74490540 BOLT.HEX.FLGHD
150 165850 BUSHING.BELLCRANK.GRD.DR
151 19133210 WASHER
156 166002 WASHER.SRRTD.5/16
158 165589 BRKT.SHIFT.MOUNT
159 165494 HUB.SHIFT
160 19292016 WASHER
161 72140406 BOLT T
162 73680400 SUB= 73690400
163 74780416 NLA
164 19091010 WASHER.5/8X.281X10GA
165 165623 BRKT.PIVOT.LEVER
166 166880 SCREW.5/16-18X5/8
168 165492 BOLT.SHOULDER.5/16-18X.561
169 165581 PLATE.FASTENING
171 17490608 SCREW LT

YGTB18546A (1999) Page 9 of 25
ELECTRICAL

YGTB18546A (1999) Page 10 of 25
ELECTRICAL
Ref # Part Number Qty Description
1 163465 SUB= 123899X
2 74760412 BOLT LT
8 7603J "TRAY T, BATTERY"
10 145211 SUB= 150177
11 150109 HOLDDOWN BATTERY
12 145769 SUB= 150177
16 153664 SWITCH INTERLOCK
19 10090400 SUB= 10040400
20 73350400 NUT
21 166181 HARNESS.ASM.LIGHT W/4152J
22 4152J HEADLAMP BULB
24 4799J "CABLE T, BATTERY"
25 146148 CABLE.6GA.22W/16W
26 166180 FUSE.15 AMP
27 73510400 NUT
28 145491 CABLE.GRND.6GA.21
29 160784 SWITCH.PLUNGER
30 140301 SWITCH IGN 4POS
31 124211X NUT IGNITION
32 141226 COVER KEY SWITCH
33 122147X KEY
40 166150 HARNESS.IGNITION
41 71110408 BOLT HXHD FIN
42 131563 SUB= 154336
43 145673 SUB= 146154
44 73640400 NUT HXKEP 1/4X20
45 122822X AMMETER
50 154959 PTO SWITCH.BLK
51 140405 RING RETAIN PTO
52 141940 PROTECTION LOOP
55 17490508 SCREW LT
70 166664 HARNESS.ENGINE
80 146685 HARNESS.CLUT.EVX.
81 109748X RELAY ASSY T

YGTB18546A (1999) Page 11 of 25
ENGINE

YGTB18546A (1999) Page 12 of 25
ENGINE
Ref # Part Number Qty Description
1 141295 CONTROL THRT 35.5
2 17720410 SCREW LT
3 SUPPLIER CHECK WITH SUPPLIER
4 149723 MUFFLER.TW.LOTONE
5 144068 EXHAUST.B&S.18.RH
6 144069 EXHAUST.B&S.18.LH
7 138129 CLAMP.TUBE.DBL.EN
8 150176 BOLT.5/16-18.UNC
10 145552 SHIELD.HEAT.
11 10040400 LOCKWASHER
12 74780412 SUB= 74780414
13 165287 GASKET MUFFLER
14 13280336 PIPE NIPPLE LT
15 13200300 ELBOW
16 11050600 LOCKWASHER
17 17490624 SCREW LT
23 159880 SHIELD.BRN/DBR.GD
25 145996 CONTROL.CHOKE.37
26 73920600 "NUT,KEPS 3/8-24IM"
27 152927 "SCREW-TT,10-32 FL"
29 137180 SUB= 532137180
31 151346 TANK FUEL REAR
32 140527 CAP ASM FUEL
33 123487X HOSE CLAMP
34 106082X PAD-SPACER LT
35 17490512 SCREW
37 8543R FUEL LINE T
38 SUPPLIER CHECK WITH SUPPLIER
39 109227X PAD IDLER TI
40 3645J BUSHING OUTLET T
41 139277 STEM.TANK.FUEL
81 128861 NUT

YGTB18546A (1999) Page 13 of 25
MOWER DECK

YGTB18546A (1999) Page 14 of 25
MOWER DECK
Ref # Part Number Qty Description
1 164210 "DECK.ASM.MOWER46"""
3 138457 BRKT.ASM.SW.44/50
5 4939M SUB= 85902
6 130832 SUB= 130833
8 850857 BLADE BOLT
9 10030600 SUB= 10040600
10 140296 WASHER.HARD.BLADE
11 163819 "BLADE MULCH 46"""
12 129895 BEARING.BALL
13 137553 SHAFT.ASM.W/BRNG
14 137152 HOUSING.MAND.44.V
15 110485X BEARING
16 140329 STRIPPER RND MWR
18 72140505 BOLT
19 132827 BOLT SHD 5/16-18
20 145055 BAFFFLE.VORTEX.46
21 73680500 SUB= 73690500
22 134753 STIFFENER BRKT
23 131267 DEFLECTOR BRKT
24 105304X CAP-SLEEVE LT
25 149287 SUB= 123713X
26 110452X NUT PUSH M
27 157788 SHIELD DEFLECTOR
28 19111016 WASHER
29 131491 HINGE ROD
30 157722 "SCREW-THD ROLL,WA"
31 129963 WASHER
32 153531 PULLEY.MAND.36/46
33 137266 SUB= 139729
34 144945 ANCHOR.SPRING.46
35 17490628 SCREW LT
36 19131316 WASHER
37 131494 FLAT IDLER PULLEY
38 156086 "KEEPER BELT,IDLER"
39 144917 PULLEY.DRV.DCK.46
40 137273 "SPRING.SEC.44""VEN"
41 17490620 SCREW
42 122052X SPACER RETAINER
43 144949 ARM.IDLER.DECK.46
44 133943 HARDENED WASHER
45 145059 COVER.MANDREL.46
46 137729 SCREW.1/4-20X5/8
47 144959 BELT-V.SEC.46.KEL
48 148763 BELT.MWR.PRM.85.4
49 73680600 SUB= 73690600
50 72110612 BOLT.3/8-16X1.50
51 153390 WASHER.FELT.
52 156493 "PULLEY IDLER,FLAT"
72 19131616 WASHER HYT
90 74760616 BOLT
91 132274 SUB= 532132274
92 73800600 NUT
93 19171416 WASHER
94 132264 SUB= 532132264
95 132273 SUB= 532132273
116 4898H BOLT M
117 165746 WHEEL.GUAGE
118 73930600 LOCKNUT

YGTB18546A (1999) Page 15 of 25
MOWER DECK
Ref # Part Number Qty Description
119 19121414 WASHER
126 144948 ARM.IDLER.PRIM.46
127 146763 PULLEY.IDLER.4.25
143651 MANDREL SERV ASM
166222 DECK COMPLETE

YGTB18546A (1999) Page 16 of 25
MOWER LIFT

YGTB18546A (1999) Page 17 of 25
MOWER LIFT
Ref # Part Number Qty Description
1 121006X LEVER ROD LT
2 159188 LEVER ASSY LIFT.RH.
6 74780624 "BOLT,HEX"
7 125631X GRIP HANDLE
8 124526X SUB= 125925X
9 122364X SUB= 125925X
10 2876H SPRING T
11 145537 LINK.LIFT.LH.GTV
12 145536 LINK.LIFT.RH.GTV.
13 4939M SUB= 85902
14 159189 LEVER.ASM.LIFT.RH
15 127218 LINK.FRONT
16 73350800 NUT
17 130171 TRUNION
18 73680800 NUT LTV
19 139868 ARM SUSP REAR
20 163552 RETAINER SPRING
23 110807X NUT T
24 19131016 WASHER
25 2876H SPRING T
26 76020308 SUB= 3145
27 126971X SUB= 532126971
28 73350600 NUT
29 138057 KNOB INF 3/8-16
30 150233 TRUNNION
31 140302 BEARING PVT LH
32 73540600 NUT.CROWNLOCK.3/8
36 155097X POINTER HEIGHT INDICATOR
37 123935X "PLUG,HOLE"
38 17490512 SCREW
39 142992 STOP.OVER.CENTER
40 19112410 WASHER
41 123934X HEIGHT INDICATOR
42 73680600 SUB= 73690600
43 19131612 WASHER GT
44 72240608 BOLT
46 12000022 E-RING
47 19292016 WASHER
49 145212 NUT.HXFLG.LOCK.
50 110452X NUT PUSH M

YGTB18546A (1999) Page 18 of 25
SCHEMATIC

YGTB18546A (1999) Page 19 of 25
SCHEMATIC
Ref # Part Number Qty Description
REFER REFER TO IMAGE

YGTB18546A (1999) Page 20 of 25
SEAT ASSEMBLY

YGTB18546A (1999) Page 21 of 25
SEAT ASSEMBLY
Ref # Part Number Qty Description
1 140118 SEAT.2500/1516.BK
2 140551 BRACKET PVT SEAT
3 145006 CLIP.PUSH-IN.HING
6 73800600 NUT
7 124181X SPRING COMPRESSIO
10 155925 PAN-SEAT
11 166369 KNOB.SEAT.ADJ.WINGNUT
12 121246X BRKT SWITCH
13 121248X BUSHING
14 72050412 BOLT-RD HD SQ NK
15 121249X SPACER SPLIT
16 123740X SPRING COMPRESSED
17 123976X SUB= 73900400
21 153236 "BOLT,SHOULDER"
22 73680500 SUB= 73690500
24 19171912 WASHER
25 127018X "BOLT,SHOULDER"
27 17490608 SCREW LT
28 150176 BOLT.5/16-18.UNC

YGTB18546A (1999) Page 22 of 25
STEERING ASSEMBLY

YGTB18546A (1999) Page 23 of 25
STEERING ASSEMBLY
Ref # Part Number Qty Description
1 140044 WHEEL STR AYP BLK
2 154427 AXLE ASM
3 156486 "SPINDLE ASM,RH"
4 157475 "SPINDLE AMS,LH"
5 6266H WASHER .T
6 121748X WASHER
8 12000029 RING
9 3366R COL. SRTG. BEAR.
10 156438 DRAGLINK-STAMPED
11 10040600 LOCKWASHER
12 73940800 SUB= 73360800
13 154779 BEARING AXLE
15 73901000 "NUT-LOC,FLANGE LT"
17 156546 SHAFT ASM STEERIN
18 57079 THRUST WASHER
19 160395 SUPPORT.SHAFT.STEER
22 165857 SCREW.HX.WSH.HD
23 165851 SHAFT.ASM.PITMAN
25 154406 BRKT-STEERING
27 136874 GEAR SECTOR
29 17490612 SCREW
32 139929 ROD.TIE.19.75
33 19111216 WASHER M
34 10040500 LOCKWASHER
35 73810500 NUT.LOCK.5/16-24
36 155099 BUSHING.STEERING
37 152927 "SCREW-TT,10-32 FL"
38 140045 CAP STEER AYP
39 19133808 WASHER T
40 7810H GRIPCO NUT
41 100711L ADAPTER LT
42 145054 BOOT.STEER.PL
43 121749X WASHER
44 153720 EXT SHAFT STEERIN
46 121232X CAP
47 6855M ZERK M
51 73800500 NUT
54 74780520 BOLT
56 19131210 WASHER
62 167902 KIT.STEER.ASM
63 74780616 BOLT
65 154780 SPACER AXLE
66 154404 "BEARING-ARM,PITMA"
67 74781044 BOLT
68 154429 BRACE AXLE
74 109850 JOINT ASM BALL
75 109851 JOINT ASM BALL
76 137156 SUB= 137347
77 73700600 NUT
78 73360600 NUT
79 19132012 WASHER
80 74950612 BOLT.HX.NYLON3/8-16X3/

YGTB18546A (1999) Page 24 of 25
WHEELS AND TIRES

YGTB18546A (1999) Page 25 of 25
WHEELS AND TIRES
Ref # Part Number Qty Description
1 59192 VALVE CAP
2 65139 VALVE STEM LT
3 106230X SUB= 122075X
4 PARTSIMAGE REFER TO PARTS IMAGE
5 106228X427 "RIM ASM 8"" FRT"
6 278H FITTING LT
7 9040H "FLANGE, BEARING"
8 124074X427 RIM.REAR.
9 124106X SUB= 138756
10 PARTSIMAGE REFER TO PARTS IMAGE
10 7154J TUBE.23X8/10-12
11 104757X HUB CAP
144334 SEALANT.TIRE 10 OZ. TUBE