Generac — Carburetor Initial Adjustment

Adjustments

From a Generac service manual covering: GN-190, GN-191, GN-320, GN-360. Check it applies to your exact model before use.

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Procedure

1. Close the THROTTLE PLATE.
2. Hold the throttle plate in its closed position and back out the idle speed stop screw.
3. Turn the idle speed stop screw until it just contacts the stop tang of the throttle shaft, then turn it in one turn further.
4. The carburetor is equipped with a fixed main jet, which requires no adjustment.

Source: Generac 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.

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