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37
REF.
NO.
PART
NO.
DESCRIPTION
1
618-0318
Clutch Collar†
2
710-0788
Self-tapping Screw, 1/4-20 x 1.0
3
711-1274
Drive Shaft
4
711-1280
Counter Shaft
5
713-0474
22-link Chain, #420
6
713-0478
14-tooth Sprocket
7
717-1422
Sprocket Bevel Gear, 42/10
8
717-1565
29-tooth Spur Gear
9
717-1569
20-tooth Spur Gear
10
718-0652
Counter Shaft Coupling
11
719-0394
Lower Housing
12a 736-0336
Flat Washer, 5/8 x 1.0 x .030*
12b 736-0337
Flat Washer, 5/8 x 1.0 x .040*
12c
736-0349
Flat Washer, 5/8 x 1.0 x .020*
13
736-0519
Flat Washer, .70 x 1.125 x .031
14
741-0336
Flange Bearing, 5/8 x 3/4 x 3/4
15
741-0337
Flange Bearing, 5/8 x 3/4 x 15/16
16
750-1238
Spacer, .635 x 1.0 x .27
17
611-0112
Detent Shaft Assembly†
611-0133
Detent Shaft Assembly‡
18
618-0369
Differential Assembly†
618-0424
Differential Assembly‡
19
661-0006
Brake Assembly
20
710-1325
Self-tapping Screw, 1/4-20 x 1.625
21
710-1206
Self-tapping Screw, 1/4-20 x 2.375
22
717-0678
Brake Pad
23
732-0863
Compression Spring
24
741-0862
Detent Ball
25
761-0202
Brake Disc
26
711-1331
Input Shaft†
711-1430
Input Shaft‡
27
716-0385
Retaining Ring, .394†
716-0108
Retaining Ring, .437‡
28
717-1571
12-tooth Bevel Pinion†
717-1464
14-tooth Bevel Pinion‡
29
719-0391A
Upper Housing
30
736-0335
Thrust Washer, .63 x 1.24 x .062†
736-0723
Thrust Washer, .635 x 1.25 x .042‡
31
741-0525
Needle Bearing, .625 x .875
32
718-0228
Clutch Collar‡
33
711-1431
Drive Shaft‡
34
750-1234
Spacer, .633 x 1.0 x .513
35
717-1362
42-tooth Bevel Gear‡
36
717-1363
42-tooth Bevel Gear‡
37
736-0495
Thrust Washer, 1.0 x .632 x .0
38
741-0340
Sleeve Bearing, .75 x .1.0 x 1.0
39
721-0338
Seal, .75 x 1.0 x .125
40
716-0231
E-ring, .75
41
618-0551
Transmission Assembly Complete
Single-speed Transmission
*If rebuilding transmission for any reason, use applicable flat washer (12a, 12b, or 12c) in this application allowing
†Used on Single-speed transmission 618-0307B ONLY.
‡Used on Single-speed transmission 618-0307C ONLY.
IMPORTANT:
One of two different transmissions may be found on your lawn tractor (618-0307B & 618-0307C). Refer to the
model plate found on the rear right portion of the transmission’s lower housing before ordering replacement service parts.
proper end play as instructed in MTD ’s Service Manual.