Cummins/Onan — Adjusting Float Level
Adjustments · carburetor
From a Cummins/Onan service manual — check it applies to your exact model before use.
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Before you start
- Do not apply excessive pressure to float valve.
Procedure
- Remove entire main fuel adjustment assembly from float bowl.
- Proper level from float to gasket should be 1/8 inch.
- Float tab should just touch fuel inlet valve and not compress inlet valve spring.
- Adjust by bending tab on float.
Specs & values
- Float to gasket dimension: 1/8 inch
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.