Cummins/Onan 6GO — Carburetor Adjustment - Gasoline
Adjustments
For the Cummins/Onan 6GO, from the Cummins/Onan operator's manual.
Applies to: Continental Red Seal Y91-273 or Y91-264 engine
Before you start
- Be sure all gaskets are in their proper place when reassembling.
Procedure
- Keep the carburetor clean and free of sediment; clean jets and passages with compressed air or a fine soft copper wire.
- Turn the idle adjustment needle out (counterclockwise) until the engine begins to misfire.
- Turn the needle in (clockwise) until the engine runs smoothly.
- Adjust the throttle lever stop screw so there is 1/32 in space between the screw end and the throttle stop at no load.
Tools required
- Screwdriver Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 1/32 in throttle stop clearance at no load
Source: Cummins/Onan operator'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.