Cummins/Onan 10CW — Carburetor Adjustment
Adjustments
For the Cummins/Onan 10CW, from the Cummins/Onan owner's manual.
Applies to: Cummins/Onan CW series engine
Before you start
- Proper adjustment depends on correct governor adjustment.
Procedure
- Warm engine thoroughly before final adjustment.
- Set idle needle with no load connected.
- Set main needle with full electrical load applied.
- Enrich until speed returns to normal.
- Adjust float setting 1-1/4 in plus 1/8 minus zero.
- Adjust throttle stop for 1/32 in clearance at rated no-load speed.
Tools required
- voltmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Float 1-1/4 in (+1/8, -0)
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.