Kohler — Adjusting Low Idle Speed (RPM)
Adjustments · Carburetor
From a Kohler service manual covering: LH630, LH685, LH750, LH760. Check it applies to your exact model before use.
Browse Kohler generators & specs →
Before you start
- Adjust only after engine is warm.
Procedure
- Start engine and run at half throttle 5-10 minutes to warm.
- Place throttle control in idle or slow position.
- Set low idle speed to 1200 RPM (±75 RPM).
- Turn low idle speed adjusting screw in or out.
- 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
- Basic engines low idle 1200 RPM
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.