Kohler — Adjust Low Idle Speed (RPM)
Adjustments · Carburetor
From a Kohler service manual covering: CH18, CH20, CH22, CH23, CH25, CH620, CH640, CH670, CH680, CH730, CH740, CH750. Check it applies to your exact model before use.
Applies to: Kohler CH18, Kohler CH740
Procedure
- Place throttle control into idle or slow position.
- Turn low idle speed adjusting screw in or out to obtain 1200 RPM (± 75 RPM).
- Check speed using a tachometer.
Tools required
- Tachometer Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Low idle speed 1200 RPM (± 75 RPM)
Full service-parts list: Kohler CH740 →
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.