Gear Cluster
Ref. | Part Number | Description | Per | Year | Model |
1 | 40-0394 | Dowel -inner cover to crankcase | 2 | 1971-73 | All B50 |
2 | 29-3857 | Mainshaft bearing | 2 | 1971-73 | All B50 |
3 | 57-3872 | Pinion – mainshaft top gear (22 teeth) | 1 | 1971-73 | All B50 |
4 | 40-3020 | Spacer (.093-.094 ) | 1 | 1971-73 | All B50 |
4 | 40-3126 | Spacer ( .098-.099 ) | AR | 1971-73 | All B50 |
4 | 40-3127 | Spacer (.103-.104 ) | AR | 1971-73 | All B50 |
5 | 57-3876 | Pinion -layshaft second gear (21 teeth) | AR | 1971-73 | All B50 |
6 | 40-3019 | Spacer (.075-.076 ) | 1 | 1971-73 | All B50 |
6 | 40-3119 | Spacer ( .070-.071 ) | 1 | 1971-73 | All B50 |
6 | 40-3120 | Spacer (.080-.081 ) | 1 | 1971-73 | All B50 |
7 | 57-2662 | Pinion -mainshaft third gear (24 teeth) | 1 | 1973 | All B50 |
7 | 57-4665 | Gear -mainshaft third (24 teeth) | 1 | 1971-73 | B50 MX |
8 | 41-3065 | Pinion -mainshaft first gear (18 teeth) | 1 | 1971-72 | B50 MX |
8 | 57-2663 | Pinion- mainshaft first gear (16 teeth) | 1 | 1971-73 | B50 T SS H |
9 | 40-3007 | Mainshaft bush -push rod | 1 | 1971-73 | All B50 |
10 | 57-4682 | Mainshaft ( complete with 18T gear) | 1 | 1973 | B50 MX |
10 | 57-4344 | Mainshaft with bush | 1 | 1971-72 | All B50 |
11 | 40-3258 | Layshaft shim | 1 | 1971-73 | All B50 |
12 | 40-3262 | Bush -layshaft first gear | 1 | 1971-73 | All B50 |
13 | 41-3073 | Pinion -layshaft first gear (25 teeth) | 1 | 1971-73 | B50 MX |
13 | 57-3874 | Pinion -layshaft first gear (27 teeth) | 1 | 1971-72 | B50 T SS H |
14 | 57-3877 | Pinion -layshaft third gear (19 teeth) | 1 | 1971-73 | All B50 |
15 | 41-3078 | Layshaft circlip | 1 | 1971-73 | All B50 |
16 | 41-3070 | Pinion -layshaft second gear (22 teeth) | 1 | 1971-73 | All B50 |
17 | 41-3068 | Layshaft with top gear (14 teeth) | 1 | 1971-73 | All B50 |
18 | 41-3072 | Thrust washer ( .078-.080 ) | AR | 1971-73 | All B50 |
18 | 41-3074 | Thrust washer ( .083-.085 ) | AR | 1971-73 | All B50 |
19 | 40-3292 | Bearing, needle roller, layshaft | 1 | 1971-73 | All B50 |
20 | 40-3265 | Clutch push rod | 1 | 1971-73 | All B50 |
21 | 41-3045 | Bush – mainshaft top gear | 2 | 1971-73 | All B50 |
22 | 71-1271 | Shield -gearbox main bearing | 1 | 1971-73 | All B50 |
23 | 41-3054 | Mainshaft oil seal | 1 | 1971-73 | All B50 |
24 | 70-6026 | Circlip -mainshaft oil seal | 1 | 1971-73 | All B50 |
25 | 71-2547 | Dowel -crankcase inner cover | 1 | 1971-73 | All B50 |
Not illustrated | 37-3932 | Distance piece – front wheel spindle, inner side right bearing | 1971-72 | B50 SS H | |
Not illustrated | 37-1237 | Grease retainer -left, outer | 1971-73 | B50 T MX | |
Not illustrated | 37-3758 | Locknut (25/64 x 3/4 x 3/64 ) | 1971 | B50 T MX | |
Not illustrated | 42-5836 | Pivot pin – front brake cable to lever | 1971-73 | B50 T MX | |
Not illustrated | 60-2632 | Circlip – grease retainer, right | 1971-73 | B50 T MX | |
Not illustrated | 60-3152 | Gaiter – front brake cable | 1971 | B50 T MX | |
Not illustrated | 65-5904 | Brake shoe spring | 1971-72 | B50 T MX |
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