Seapower Marine hold an extensive range of digital service, parts and installation manuals for most Cummins Onan generators and HMLD engines. These manuals are FREE to download. Please ensure when using these manuals that you to check your Engine Service Number (ESN) and that you are using the correct model specification. Manuals do some times cover a range of different specifications and contain information for both Negative and ISO ground sets. If you are unsure, please call us for further assistance.

We have access to technical and electrical drawings for Cummins engines and generators, gearboxes and couplings. Should you require these as part of your installation, please call us for further details.