Kohler — Walbro Carburetor Adjustment
Adjustments · Carburetor low idle fuel needle
From a Kohler service manual covering: CV11, CV12.5, CV13, CV14, CV15, CV16, CV460-465, CV490-495. Check it applies to your exact model before use.
Applies to: Kohler CV11, Kohler CV460-465, Kohler CV490-495
Before you start
- Certified engines may have a fixed idle or limiter cap on the idle fuel adjusting needle.
Procedure
- Start the engine and run at half throttle 5 to 10 minutes to warm up.
- Place throttle in "idle" or "slow" position. Turn the low idle fuel adjusting needle out (counterclockwise) until engine speed decreases (rich); note position.
- Turn the adjusting needle in (clockwise); engine speed increases then decreases as it goes lean; note position.
- Set the adjusting needle midway between the rich and lean settings.
Specs & values
- Preliminary low idle fuel needle setting 1 turn
Full service-parts list: Kohler CV11 →, Kohler CV460-465 →, Kohler CV490-495 →
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.