Cummins/Onan — Prestart Preparation Checks
Installation · Generator set
From a Cummins/Onan service manual covering: 275 DFBF, 300 DFCB, 350 DFCC. Check it applies to your exact model before use.
Applies to: Cummins/Onan 275 DFBF, Cummins/Onan 300 DFCB, Cummins/Onan 350 DFCC, Cummins/Onan NT-855-G6 engine, Cummins/Onan NTA-855-G2 engine, Cummins/Onan NTA855-G3 engine
Before you start
- Verify at least 12 inches (305 mm) clearance between exhaust pipes and combustible materials.
Procedure
- Check ventilation and exhaust systems.
- Check all mechanical connections.
- Fill the coolant, lubrication and fuel systems.
- Prime the lubrication and fuel systems.
- Check the fuel system for leaks.
- Check the lubrication system for leaks.
Full service-parts list: Cummins/Onan 275 DFBF →, Cummins/Onan 350 DFCC →
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.