Cummins/Onan P218 / P220 — Cooling System Maintenance
Maintenance · Cylinder cooling fins
For the Cummins/Onan P218 / P220, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan P218, Cummins/Onan P220
Before you start
- Always wear safety glasses when using compressed air or a pressure washer to avoid severe eye damage.
- Cleaning a hot engine can crack the cylinder.
Procedure
- Wear safety glasses.
- Let the engine cool, especially when using a pressure washer.
- Observe all manufacturer's instructions and precautions when using a pressure washer.
- Use compressed air or a pressure washer to clean the cylinder cooling fins.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan P218 →, Cummins/Onan P220 →
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.