| Serial # Range | Summary of Change / Description | Part # | Doc # | Download Link |
|---|---|---|---|---|
| J27680 - 31500 | O-Ring Ports on Cylinder | 628000 | 628033 | Download Manual |
| J26732 - J27679 | Changed to Bi-Rotational Pump and Removed 6628 pgs | 628000 | 628031 | Download Manual |
| J26220 - J26731 | Removed VC620 pgs (no changes to design) | 628000 | 628030 | Download Manual |
| J25821 - J26219 | Updated Power Unit Pages | 628000 | 520094 | Download Manual |
| J25453 - J25820 | Original Design | 628000 | 520068 | Download Manual |