Parts on group :
| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 010. | 12181-21112 | [1] | PISTON | STD |
| 010. | 12181-21912 | [1] | PISTON | +0.25MM |
| 010. | 12181-21922 | [1] | PISTON | +0.50MM |
| 020. | 12181-21053 | [1] | ASSY PISTON RING | STD |
| 020. | 12181-21093 | [1] | ASSY PISTON RING | +0.25MM |
| 020. | 12181-21103 | [1] | ASSY PISTON RING | +0.50MM |
| 030. | 12181-21310 | [1] | PIN PISTON | |
| 040. | 12181-21330 | [2] | CLIP PISTON PIN | |
| 050. | 12181-22010 | [1] | ASSY ROD CONNECTING | STD |
| 050. | 12181-22050 | [1] | ASSY CONNECTING ROD | -0.25MM |
| 050. | 12181-22060 | [1] | ASSY ROD CONNECTING | -0.50MM |
| 060. | 13961-22140 | [2] | BOLT CONNECTING ROD | |
| 070. | 12181-22170 | [2] | WASHER ROD BOLT | |
| 080. | E7161-23110 | [1] | CRANKSHAFT | |
| 085. | 06311-75015 | [1] | PLUG EXPANSION | |
| 090. | 12181-24110 | [1] | GEAR CRANKSHAFT | |
| 100. | 12181-26440 | [1] | GEAR BALANCER | |
| 110. | 12181-95240 | [1] | KEY WOODRUFF | |
| 120. | 08103-06306 | [1] | BEARING BALL | |
| 130. | 12621-16300 | [1] | BEARING BALL | <=3S8175 |
| 130. | 08103-06206 | [1] | BEARING BALL | >=3U0001 |
| 140. | 13961-16640 | [2] | SEAL OIL | |
| 150. | 12183-23250 | [1] | COLLAR CRANKSHAFT | |
| 160. | 13641-23680 | [1] | SHIM | 0.20MM |
| 160. | 13641-23620 | [1] | SHIM 30 | 0.30MM |
| 160. | 13641-23630 | [1] | SHIM | 0.40MM |
| 160. | 13641-23650 | [1] | SHIM 50 | 0.50MM |
| 160. | 12181-23620 | [1] | SHIM | 0.60MM |
| 160. | 12181-23630 | [1] | SHIM | 0.70MM |
