Cummins/Onan 627.20199 — Fuel Pump Check
Testing & diagnosis
For the Cummins/Onan 627.20199, from the Cummins/Onan owner's manual.
Applies to: Craftsman 627.20199
Before you start
- Prevent fire or explosion due to open flame, pilot light, or ignition arc.
Procedure
- Disconnect fuel line at carburetor.
- Direct fuel line flow into suitable container in well ventilated area.
- Crank engine slowly by hand and observe if fuel comes from line.
- If fuel pump fails and tank/line are open, repair or replace pump.
Full service-parts list: Craftsman 627.20199 →
Source: Cummins/Onan owner'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.