Cummins/Onan — Starting the Generator Set (Electric Starter)
Operation · Control Panel
From a Cummins/Onan service manual covering: P4500, P5000E, P5000e. Check it applies to your exact model before use.
Applies to: Cummins/Onan P4500
Before you start
- Do not operate the generator set in hazardous environments or in rain, snow, or on wet ground.
Procedure
- Open the fuel valve.
- Pull the choke rod out to close the choke if the engine is cold.
- Press and hold the Start/On/Off switch in the START position until the engine starts.
- Gradually push the choke rod in as the engine warms up.
- Let the engine warm up for a few minutes before connecting tools or appliances.
Full service-parts list: Cummins/Onan P4500 →
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.