Cummins/Onan — Preparation for storage (6 months or longer)
Maintenance · Generator set
From a Cummins/Onan operator's manual covering: PX4800, RGX2900, RGX3600. Check it applies to your exact model before use.
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Before you start
- NEVER USE WATER TO CLEAN GENERATOR!
Procedure
- Drain fuel from the fuel tank carefully by disconnecting the fuel line.
- Remove the carburetor float chamber and also drain the carburetor.
- Change engine oil.
- Check for loose bolts and screws, tighten them if necessary.
- Clean the generator thoroughly with oiled cloth; spray with preservative if available.
- Pull the starter handle until resistance is felt, leaving the handle in that position.
- Store the generator in a well ventilated, low humidity area.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.