| Year | HP | Model | Cylinders | Serial Number | |
| 91-97 | 50 | - | 3 | D000750-OG589999 | Select Engine |
| 84-90 | 50 | - | 3 | 6428681-D000749 | Select Engine |
| 67 | 50 | 500 | 4 | 2116318-2305100 | Select Engine |
| 70-75 | 50 | Elec Str. | 4 | 2858814-4357639 | Select Engine |
| 97-06 | 50 | Man. Str. | 3 | OG531301-OT999999 | Select Engine |
| 97-06 | 50 | Elec Str. | 3 | OG531301-OT999999 | Select Engine |
| 98-05 | 50 | Jet | 3 | 0G590000-0T408999 | Select Engine |
| 02-05 | 50 | Elec Str. 4 Stk | 4 | 0T178500-0T598999 | Select Engine |
| 2005 | 50 | EFI 4 Stk | 4 | 0T409000-0T800999 | Select Engine |
| 2006 | 50 | EFI 4 Stk | 4 | 0T801000-1B344306 | Select Engine |
| 42893 | 50 | EFI 4 Stk | 4 | 1B344306-1C050252 | Select Engine |
| 76-79 | 50 | Man. Str. | 4 | 4357640-5531629 | Select Engine |
| 80-85 | 50 | Man. Str. | 4 | 5531630-A912477 | Select Engine |
| 76-79 | 50 | Elec Str. | 4 | 4357640-5531629 | Select Engine |
| 80-85 | 50 | Elec Str. | 4 | 5531630-A912477 | Select Engine |