BST63AR (1999 & Before) Page 1 of 5
GEAR CASE ASSEMBLY
BST63AR (1999 & Before) Page 2 of 5
GEAR CASE ASSEMBLY
Ref # Part Number Qty Description
1 53838 SUB= 73510400
2 85178 SUB= 85177X004
3 88386 SHIFTER PM
4 57072 SEAL
5 57388 DRIVE LOK PIN
6 48032 CASE HALF KIT PM
7 77881 BEARING
8 77039 SUB= 81585X004
9 79947 SUB= 48280
10 57079 THRUST WASHER
11 75144 NLA
12 87822 GROOVE PIN PM
13 86447 PLUG PM
14 83659 SUB= 133804
15 75424 SUB= 750436X
16 750355 SUB= 6066J
17 53753 E-RING
18 83684 SQUARE KEY
19 83720 WORM SHAFT
20 65692 WOODRUFF KEY
21 83680 WORM
22 50950 SUB= 2276J
23 86012 DRV SHAFT TUBE PM
24 65692 WOODRUFF KEY
25 57076 WOODRUFF KEY
26 54338 SUB= 74760444
27 83632 SUB= 137090
28 68038 SUB= 73850400
29 75192 SPRING
30 83681 PULLEY.DRIVE.LM
31 74976 RETAINER RING
32 83700 CABLE CLAMP
33 54562 SCREW
BST63AR (1999 & Before) Page 3 of 5
LAWN MOWER - MAIN ASSEMBLY
BST63AR (1999 & Before) Page 4 of 5
LAWN MOWER - MAIN ASSEMBLY
Ref # Part Number Qty Description
1 REFER TO IMAGE
2 87025 CONTROL DRIVE PM
3 48029 SUB= 79953
4 48030 SUB= 87025
5 103094X CONTROL BAIL
6 103246X SUB= 103111X479
7 101632X GRIP COMFORT PM
8 84683 SUB= 84684X479
9 84874 ZONE CONTROL ACTUATOR
10 78186 SCREW
11 74189 NUT
12 107068X CABLE.ASM.PM.
13 83813 SCREW PM
14 107245X THROTTLE CNTRL PM
15 54138 SUB= 74760432
16 85723 WASHER PM
17 63601 SUB= 73800400
18 58714 SUB= 131959
19 63688 SUB= 136376
20 103672X ROPER GUIDE PM
21 54583 SCREW
22 51793 HAIRPIN COTTER
23 81281 HANDLE LEVER
24 62363 SPRING - LEVER
25 87945 SUB= 85535
26 750097 TAPPING SCREW
27 85827 CABLE CLIP PM
28 111199X REAR SKIRT PM
29 750097 TAPPING SCREW
30 55912 SUB= 74780612
31 74400 SUB= 73800600
32 103510X SUB= 150959
33 103511X SUB= 150959
34 59289 STEEL WASHER
35 55187 SCREW
36 70385 CABLE CLIP
37 850211 SUB= 111662X479
38 850212 SUB= 111661X479
39 107613X SUB= 107612X004
40 84888 SUB= 700331X004
41 77865 SUB= 532132800
42 84920 SUB= 146630
43 61651 WASHER
44 84921 SUB= 142748
45 88348 WASHER PM
46 62336 SUB= 73800600
47 107707X SUB= 702245
48 107620X WHEEL & TIRE PM
49 52160 WASHER
50 55015 CLIP.RETAINER
51 77400 HUB CAP
52 48097 SUB= 48174
53 48098 SUB= 48175
54 61528 SUB= 74100412
55 76401 DUST COVER
56 74507 PINION.10.TEETH
57 53753 E-RING
58 69478 SUB= 750085X007
BST63AR (1999 & Before) Page 5 of 5
LAWN MOWER - MAIN ASSEMBLY
Ref # Part Number Qty Description
59 100945R DISCHARGE GRD PM
60 53847 SUB= 19091214
61 53490 NUT
62 674A260 SUB= 800767
63 674A261 SUB= 800769
64 103673X HINGE ROD PM
65 100958L SPRING-TORSION PM
66 59349 PAL NUT PM
67 53490 NUT
68 111880X NLA
69 75449 SPEED NUT
70 69411 SCREW
71 75725 SCREW
72 85285 SUB= 132352X479
73 85284 REAR BAFFLE PM
74 83691 V-BELT.LM.DRIVE
75 82626 SUB= 74940620
76 850263 LOCKWASHER
77 103524X "BLADE 22"" PM"
78 107250X SUB= 851026
79 84942 WASHER.FLAT.3/8
80 107611X ROD.SUPPORT.WB.
81 68205 SCREW MACHINE H
82 83629 BELT SNUBBER
83 59708 SCREW
84 85543 ENGINE PULLEY PM
85 87677 HI PRO KEY PM
86 48039 SUB= 48282
87 75448 SUB= 137080
88 111173X SHOULDER BOLT PM
89 62336 SUB= 73800600
90 85463 DECAL-DANGER PM
91 111707X HOUSING DECAL
92 111708X HOUSING DECAL, LEFT
93 111705X NAME PLATE
94 111704X DRIVE COVER DECAL
850497 OWNERS MANUAL
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