Kohler L600 / L654 — Gas Carburetor / Adapter Adjustment

Adjustments · Gas carburetor/adapter

For the Kohler L600 / L654, from the Kohler service manual.

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Procedure

1. Turn the idle stop screw in about 2 turns or until the butterfly valve is held slightly open.
2. Turn IDLE FUEL screw (gas carburetor only) all the way in until it bottoms lightly.
3. Turn MAIN FUEL or LOAD screw all the way closed then back out 5 turns for initial setting.
4. Start the engine and adjust MAIN FUEL until engine runs smoothest at governed speed no load.
5. Put engine under normal load and readjust MAIN FUEL as needed for final power adjustment.

Source: Kohler 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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