| Year | HP | Model | |
| 81-83 | 50 | W/Points | Select Engine |
| 87 | 50 | B | Select Engine |
| 84-87 | 50 | A, C | Select Engine |
| 88 | 50 | A, B, C | Select Engine |
| 88 | 50 | D | Select Engine |
| 89-92 | 50 | All Models | Select Engine |
| 92-95 | 50 | 0E009500-0E138599 | Select Engine |
| 96-97 | 50 | 0E138600-0E283999 | Select Engine |
| 92 | 50 | 0E000001-0E009499 | Select Engine |