| Year | HP | Model | Cylinders | |
| 69-72 | 20 | Man. Start | 2 | Select Engine |
| 73 | 20 | Man. Start | Select Engine | |
| 77-84 | 20 | Man. Start, Cross Flow | 2 | Select Engine |
| 77-81 | 20 | Elec. Start | 2 | Select Engine |
| 82-84 | 20 | Elec. Start, Cross Flow | 2 | Select Engine |
| 85-88 | 20 | Man. Start | 2 | Select Engine |
| 85-88 | 20 | Elec. Start | 2 | Select Engine |
| 89-91 | 20 | Man. Start | 2 | Select Engine |
| 89-91 | 20 | Elec. Start | 2 | Select Engine |
| 92 | 20 | Elec. Start | 2 | Select Engine |
| 93-99 | 20 | Man. Start | 2 | Select Engine |
| 93-95 | 20 | Elec. Start | 2 | Select Engine |
| 96-98 | 20 | Elec. Start | 2 | Select Engine |
| 00 | 20 | Jet | 2 | Select Engine |