| Model Num | Machine S/N Base | Machine S/N Last |
|---|---|---|
| 793, 793B | 3SJ | UP |
| Misc: Use with 1060904, 1061807 or 1591977 Head | ||
| 789, 789B, 789C | 9ZC | UP |
| Misc: Field replacement | ||
| 789, 789B, 789C | 7EK | UP |
| Misc: Field replacement | ||
| 789, 789B, 789C | 2BW | UP |
| Misc: Field replacement | ||
| 793, 793B | 1HL | 57 |
| Misc: Use with 1060904, 1061807 or 1591977 Head | ||