Cummins/Onan — Gasoline Fuel System Installation
Installation
From a Cummins/Onan service manual — check it applies to your exact model before use.
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Before you start
- Gasoline presents hazard of explosion or fire.
- Do not connect generator set fuel line to pressurized part of vehicle fuel system.
Procedure
- Do not alter vehicle fuel supply design.
- If separate connection is not supplied, add a second fuel pickup in tank; pickup should not extend below bottom 1/4 of tank.
- Do not tee off the vehicle fuel line.
- Use a separate fuel line for the generator set.
- Install an approved flexible non-metallic non-conductive and non-organic fuel line between vehicle fuel system and generator set.
- Onan recommends seamless steel tubing and flared connections for long runs.
- Run fuel lines at same height as top level of tank to a point as close to engine as possible.
- Keep fuel lines away from hot engine or exhaust areas.
- Use metal straps without sharp edges to secure fuel lines.
- Flexible line must be long enough to allow set movement to prevent binding, stretching, or breaking.
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.