| Fig. | Item # | Hodaka Part # | Description | Amt. |
| B | 1 | 821001 | Crankcase assembly (left and right) | 1 |
| B | 2 | 901011 | Main shaft bushing | 1 |
| B | 3 | 901004 | Counter shaft bushing | 1 |
| B | 4 | (46)0640 | Screw | 2 |
| B | 5 | (46)0650 | Screw | 5 |
| B | 6 | (46)0660 | Screw | 4 |
| B | 7 | 551008 | Crankcase alignment dowel (large) | 1 |
| B | 8 | 901009 | Crank case alignment dowel (small) | 1 |
| B | 9 | BB6204 | Bearing | 1 |
| B | 10 | BB6304 | Bearing | 2 |
| B | 11 | 941010 | Crank shaft oil seal (L) | 1 |
| B | 12 | 991003 | Crank shaft oil seal (Right) | 1 |
| B | 13 | (91)5202 | Crank shaft snap ring | 1 |
| B | 14 | BB6005 | Bearing - ball bearing | 1 |
| B | 15 | 991015 | Main shaft thrust snap ring | 1 |
| B | 16 | 901012 | Counter shaft oil seal | 1 |
| B | 17 | (10)0812 | Drain plug | 1 |
| B | 18 | 901020 | Drain plug gasket | 1 |
| B | 19 | 901002 | Cylinder stud bolt (M7) | 4 |
| B | 20 | 901013A | Breather | 1 |
| B | 21 | 821018 | Gasket - crankcase gasket | 1 |
| B | 22 | 992700A | Crank shaft assembly (23/28) | 1 |
| B | 23 | 992701 | Crank shaft (magneto side) | 1 |
| B | 24 | 992702A | Crank shaft (clutch side) | 1 |
| B | 25 | 992710 | Connecting rod | 1 |
| B | 26 | 992703 | Crank pin (call for sizing) | 1 |
| B | 27 | 902709 | Bearing - needle bearing (large end) | 1 |
| B | 28 | 992705 | Crank pin thrust washer | 2 |
| B | 29 | 912712R | Connecting rod needle bearing (small end) | 1 |
| B | 30 | 902714 | Crank shaft washer (L) | 1 |
| B | 31 | 902713 | Crank shaft key (L) | 1 |
| B | 32 | 903001 | Flywheel nut (M10) | 1 |
| B | 33 | (65)10009 | Fly wheel lock washer | 1 |
| B | 34 | 8201450 | Piston assembly (standard) - Piston, rings, wrist pin & snap rings | 1 |
| B | 34 | 8201451 | Piston assembly (.010 over) - Piston, rings, wrist pin & snap rings | 1 |
| B | 34 | 8201452 | Piston assembly (.020 over) - Piston, rings, wrist pin & snap rings | 1 |
| B | 34 | 8201453 | Piston assembly (.030 over) - Piston, rings, wrist pin & snap rings | 1 |
| B | 34 | 8201454 | Piston assembly (.040 over) - Piston, rings, wrist pin & snap rings | 1 |
| B | 36 | 802707 | Piston wrist pin | 1 |
| B | 37 | 902708 | Piston pin snap ring | 1 |
| B | 38 | 944020A | Clutch disc | 1 |
| B | 39 | 90402502 | Clutch disc spacer t=0.2mm | 1 |
| B | 39 | 90402503 | Clutch disc spacer t=0.3mm | 1 |
| B | 39 | 90402505 | Clutch disc spacer t=0.5mm | 1 |
| B | 40 | 944014 | Crank shaft nut (left hand thread, M14) | 1 |
| B | 41 | 944013 | Lock washer | 1 |
| B | 42 | 824000 | Clutch assembly (43/53) | 1 |
| B | 43 | 934008 | Clutch cover | 1 |
| B | 44 | 934011 | Clutch spring | 7 |
| B | 45 | 944012 | Clutch hub | 1 |
| B | 46 | 944015 | Clutch thrust washer | 1 |
| B | 47 | 34006 | Clutch friction disc | 3 |
| B | 48 | 924007 | Clutch plate | 2 |
| B | 49 | 994004 | Clutch cage | 1 |
| B | 50 | 924005 | Clutch cage cover | 1 |
| B | 51 | 994009 | Clutch screw (M5) | 7 |
| B | 52 | 924010 | Clutch safety wire (0.85) | 1 |
| B | 53 | 944002 | Clutch rotor gear | 1 |
| B | 54 | 824001 | Clutch pinion gear 18T (helical) | 1 |
| B | 55 | 994003 | Kick pinion gear 21T | 1 |
| B | 56 | 994016A | Bearing - needle bearing clutch pinion gear | 1 |