Kohler L600 / L654 — Valve Tappet Clearance Adjustment (Cold)
Adjustments · Valve tappet mechanism
For the Kohler L600 / L654, from the Kohler service manual.
Applies to: Kohler L600 engine
Procedure
- Remove spark plugs then turn engine until #1 piston is at Top Dead Center on compression stroke - both valves closed.
- Insert feeler gauge between tappet and end of exhaust valve.
- Adjust clearance by moving tappet setscrew so a very slight drag is felt on the feeler gauge as it is withdrawn.
- Repeat procedure on the intake valve of #1 cylinder.
- Turn engine until the next piston is at TDC compression and repeat on each cylinder in turn.
Tools required
- Feeler gauge Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Intake valve clearance .008 inch cold
- Exhaust valve clearance .011 inch cold
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.