Cummins/Onan — Emergency Start-Stop Operation
Operation · Control board
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan MCCK
Before you start
- This emergency operation does NOT provide fuse protection, start disconnect or low oil pressure shutdown, and should not be used without monitoring the generator set.
Procedure
- Connect a jumper between terminals 9 and 11 to energize ignition, fuel solenoid and fuel pump.
- Temporarily jumper terminals 1 and 7 to energize starter.
- Remove this jumper as soon as the engine starts and runs.
- Do not jumper these terminals while the engine is running.
- To stop the genset, remove the jumper from terminals 9 and 11.
Tools required
- Jumper wires Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan MCCK →
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.