| Item | Part No. | Part Name | Qty | Serial No. |
| ENGINE, TIER I (SEE FIG. A0100-01A0) | A90002-A90008- | |||
| YM12390011330 | VALVE COVER | A90002-A90008- | ||
| 1 | (NSS) | COVER | A90002-A90008- | |
| 2 | YM11959303100 | FILTER | A90002-A90008- | |
| 3 | YM12390003201 | PLATE | A90002-A90008- | |
| 4 | YM12390003210 | GASKET | A90002-A90008- | |
| 5 | YM12390003220 | HOSE, BREATHER | A90002-A90008- | |
| 6 | YM12390011310 | GASKET, VALVE COVER | A90002-A90008- | |
| 7 | YM26022050122 | SCREW | A90002-A90008- | |
| 8 | HEAD, CYLINDER (SEE FIG. A0103-01A0) | A90002-A90008- | ||
| 9 | YM12416001751 | CAP | A90002-A90008- | |
| 10 | YM24311000320 | O-RING | A90002-A90008- | |
| 11 | YM12416011360 | KNOB | A90002-A90008- | |
| 12 | YM24311000120 | O-RING | A90002-A90008- | |