| Fig. | Part No. | Description | Quantity |
| 10 | 10000100 | Left and right crankcase halves (pair) | 1 |
| 11 | 10015000 | Locating bush | 1 |
| 12 | 10015100 | Bush | 1 |
| 13 | 10016501 | Bush for camshaft | 1 |
| 14 | 10016700 | Dowel? Perno fermo preselettore | 1 |
| 15 | 10017202 | Oil pump plate | 1 |
| 16 | 98200410 | Bolt for oil pump plate | 2 |
| 17 | 92201435 | Right main bearing | 1 |
| 18 | 10013301 | Retainer for right main bearing | 1 |
| 19 | 98280630 | Bolt for right main bearing retainer | 2 |
| 20 | 92602206 | Nut | 17 |
| 21 | 92201425 | Right bearing for gearbox primary shaft | 1 |
| 22 | 90272062 | Circlip for right primary shaft bearing | 1 |
| 23 | 92201217 | Right bearing for secondary shaft | 1 |
| 24 | 90272040 | Circlip for right secondary shaft bearing | 1 |
| 25 | 10017501 | Kickstarter shaft | 1 |
| 26 | 92234435 | Left main bearing | 1 |
| 27 | 90403253 | Oil seal for left main bearing | 1 |
| 28 | 92201235 | Left primary shaft bearing | 1 |
| 29 | 90404560 | Oil seal for left primary shaft bearing | 1 |
| 30 | 92254317 | Left secondary shaft bearing | 1 |
| 31 | 10007400 | Breather tube | 1 |
| 32 | 10018101 | Top front crankcase bolt with nuts | 1 |
| 34 | 98052485 | Bottom crankcase bolt | 1 |
| 35 | 10017601 | Bottom crankcase bolt with nuts | 3 |
| 36 | 98052340 | Crankcase bolt | 9 |
| 37 | 95004208 | Washer for top front crankcase bolt | 2 |
| 38 | 10000900 | Centre crankcase gasket | 1 |
| 39 | 10001301 | Right side casing | 1 |
| 40 | 92201417 | Camshaft bearing | 1 |
| 41 | 90272047 | Circlip for camshaft bearing | 2 |
| 42 | 90403547 | Oil seal for camshaft | 1 |
| 43 | 10002105 | Bush for points end of camshaft | 2 |
| 44 | 90401424 | Oil seal | 1 |
| 45 | 98620325 | Bolt for right side casing | 10 |
| 46 | 98620335 | Long bolt for right side casing | 2 |
| 47 | 90706087 | Oil seal for bush 13 | 1 |
| 48 | 10001700 | Gasket for right side casing | 1 |
| 49 | 10001600 | Contact breaker cover | 1 |
| 50 | 98622318 | Bolt for contact breaker cover | 2 |
| 51 | 10004900 | Oil level dipstick | 1 |
| 52 | 90714195 | Washer for dipstick | 1 |
| 53 | 10004600 | Breather valve | 1 |
| 54 | 10005300 | Washer for breather valve | 1 |
| 55 | 10005100 | Bolt for breather valve | 1 |
| 56 | 10005200 | Oil seal for breather valve | 1 |
| 57 | 10000401 | Internal left side cover | 1 |
| 58 | 10000201 | External left side cover | 1 |
| 59 | 98622320 | Bolt for left casing | 10 |
| 60 | 95004206 | Washer for casing bolts | 12 |