Cummins/Onan 4.0BGEFA261 OOL / 4.0BGEFA26100L — Returning the Genset to Service
Maintenance
For the Cummins/Onan 4.0BGEFA261 OOL / 4.0BGEFA26100L, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan EM (SN5782U1G2RA) engine
Procedure
- Check the oil tag on the genset and change the oil if the viscosity is not appropriate for expected temperatures.
- Reconnect the starting battery (negative [-] cable last).
- Remove the plug from the exhaust tailpipe.
- Open the fuel supply valve (if so equipped).
- Inspect the genset per Oil Level Check and General Inspection.
- Start the genset at the genset control panel; initial startup may be slow with smoke and rough operation until fogging oil burns off.
- If the engine does not start, clean or replace the spark plugs as they may have been fouled by the fogger.
- Push the genset line circuit breaker ON when the genset is ready to power appliances.
Source: Cummins/Onan operator's 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.