| Model | Horsepower | Year(s) |
|---|---|---|
| 50RS77 | 50 | 1977 |
| 50RS78G | 50 | 1978 |
| 50RS78S | 50 | 1978 |
| 50RSL77 | 50 | 1977 |
| 50RSL78G | 50 | 1978 |
| 50RSL78S | 50 | 1978 |
| 55E76 | 55 | 1976 |
| 55E77 | 55 | 1977 |
| 55E78 | 55 | 1978 |
| 55E79 | 55 | 1979 |
| 55EL76 | 55 | 1976 |
| 55EL77 | 55 | 1977 |
| 55EL78 | 55 | 1978 |
| 55EL79 | 55 | 1979 |
| 55ES69 | 55 | 1969 |
| 55ESL69 | 55 | 1969 |
| 60ES70 | 60 | 1970 |
| 60ES71 | 60 | 1971 |
| 60ESL70 | 60 | 1970 |
| 60ESL71 | 60 | 1971 |