General Motors — Adjust the Carburetor (Fuel Mixer)
Adjustments · Carburetor / fuel mixer
From a General Motors service manual — check it applies to your exact model before use.
Procedure
- Place the master switch in the RUN position to start the generator set; run at approximately half load.
- Adjust the fuel mixture screw until the engine runs smoothly.
- Apply varying loads and readjust the carburetor for smooth performance at all load levels.
- Place the master switch in the OFF position to stop the generator set.
Source: General Motors 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.