Cummins/Onan 6GO — Carburetor Adjustment - Gas or Vapor
Adjustments · Carburetor gas adjustment valve
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
- A change in the BTU rating of the fuel used will probably necessitate readjusting the valve.
Procedure
- With full load on the plant, turn the knurled head gas adjustment valve in (clockwise) until voltage drops noticeably or the engine begins to lose speed.
- Turn the screw slowly out (counterclockwise) until voltage rises to normal and the engine runs smoothly.
- Check the operation at various loads.
Specs & values
- 1/32 in clearance between throttle lever stop screw and throttle stop 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.