Cummins/Onan — Disassembly and Assembly Preparation and Precautions
Maintenance · generator
From a Cummins/Onan service manual covering: P3200i, P4300i, P4300ie, RG 3200 IS, RG 4300 IS, RG2800i. Check it applies to your exact model before use.
Applies to: Cummins/Onan P3200i, Cummins/Onan P4300ie, Subaru EX21 engine, Subaru EX27 engine
Before you start
- Failure to reattach foam rubber linings will result in poor performance and durability.
Procedure
- Memorize and tag the location of individual parts before disassembling.
- Divide parts into groups and store them in boxes.
- Replace bolts and nuts temporarily in their original positions.
- Clean disassembled parts with neutral cleaning fluid before reassembly.
- Remove the battery before disassembling the generator (electric start models).
- Use the proper tool for each specific job.
- Attach foam rubber linings inside covers on their original position; replace if deformed or damaged.
- Bind wires and fuel pipes using wire bands as in original configuration.
Full service-parts list: Cummins/Onan P4300ie →
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.