Parts on group PISTON AND CRANKSHAFT:
| Pos. | Part No | Qty | Parts name | Comments | 
|---|---|---|---|---|
| 1. | 1G780-21113 | [4] | PISTON | STD | 
| 1. | 1G780-21903 | [4] | PISTON | +0.25mm | 
| 2. | 1A091-21050 | [4] | PISTON RING ASSY | STD | 
| 2. | 1A091-21090 | [4] | PISTON RING ASSY | +0.25mm | 
| 3. | 14901-21310 | [4] | PIN-PISTON | |
| 4. | 1G279-21330 | [8] | CIRCLIP-INTERNAL | |
| 5. | 17311-22010 | [4] | CONNECTING ROD ASSY | |
| 6. | 17331-21980 | [1] | BUSH-PISTON PIN | |
| 7. | 15521-22142 | [2] | BOLT-CONN ROD | |
| 8. | 17311-22310 | [1] | METAL-CRANKPIN | STD SET | 
| 8. | 17331-22970 | [1] | METAL-CRANKPIN | -0.20mm SET | 
| 8. | 17331-22980 | [1] | METAL-CRANKPIN | -0.40mm SET | 
| 9. | 1G790-23012 | [1] | CRANKSHAFT COMP | |
| 10. | 07715-00401 | [4] | BALL | |
| 11. | 19202-23280 | [1] | BUSH-CRANKSHAFT | |
| 12. | 1K322-24110 | [1] | GEAR-CRANKSHAFT | |
| 13. | 05712-00728 | [1] | KEY-FEATHER | |
| 14. | 15471-23312 | [1] | SLINGER-OIL | |
| 15. | 19202-23250 | [1] | COLLAR-CRANKSHAFT | |
| 16. | 04811-10300 | [1] | O-RING | |
| 17. | 15221-23360 | [1] | NUT-CRANKCASE | |
| 18. | 1A091-23470 | [1] | METAL-CRANKSHAFT | STD | 
| 18. | 1A091-23910 | [1] | METAL-CRANKSHAFT | -0.20mm | 
| 18. | 1A091-23920 | [1] | METAL-CRANKSHAFT | -0.40mm | 
| 19. | 19202-04140 | [4] | SEAL-OIL | |
| 20. | 1A091-23530 | [2] | METAL-SIDE | STD | 
| 20. | 1A091-23950 | [2] | METAL-SIDE | +0.20mm | 
| 20. | 1A091-23960 | [2] | METAL-SIDE | +0.40mm | 
| 21. | 1A091-23540 | [2] | METAL-SIDE | STD | 
| 21. | 1A091-23970 | [2] | METAL-SIDE | +0.20mm | 
| 21. | 1A091-23980 | [2] | METAL-SIDE | +0.40mm |