Cummins/Onan FM-JFE2 — Fuel Pump Service
Repair & overhaul
For the Cummins/Onan FM-JFE2, from the Cummins/Onan service manual.
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Procedure
- Check fuel supply, shut-off valve, fuel lines, and strainer before disassembling pump.
- If pump will not operate, remove from engine and repair or replace.
- Removal of six screws in top allows separation into cover group and pump body group.
- When reassembling, shellac edges of diaphragm to insure air tight seal.
- Check operation and all connections for leakage.
Tools required
- screwdriver Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.