Kohler — Cylinder Head Service
Maintenance · Cylinder Heads
From a Kohler operator's manual covering: 4CFKM, 4CFKM/CFKMR, 4CKM, 4CKM/CKMR, 5CKM, 5CKM/CKMR, TP-5393. Check it applies to your exact model before use.
Applies to: Kohler 4 and 5 kW, Kohler 4CFKM, Kohler 4CKM, Kohler 5CKM, Kohler M18 / M20 engine, Kohler M18 engine, Kohler M20 engine
Before you start
- Avoid scratching aluminum surfaces of the cylinder head.
Procedure
- After each 500 hours remove the cylinder heads from the engine.
- Remove carbon deposits from combustion chamber with a sharp piece of wood or plastic.
- Use new cylinder head gaskets when reinstalling.
- Tighten head bolts in the proper sequence to 15-20 ft. lbs. (20-27 Nm).
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Cylinder head tightening torque 15-20 Amazon eBay FridayParts $130.18 ft. lbs. (20-27 Nm)
Full service-parts list: Kohler 4 and 5 kW →, Kohler 4CFKM →, Kohler 4CKM →, Kohler 5CKM →
Source: Kohler operator's 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.