Kohler K361 — Valve Guide Replacement (Service Bulletin 144)
Repair & overhaul · Cylinder head valve guides
For the Kohler K361, from the Kohler service manual.
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Before you start
- Use extreme care when working with hot oven; cylinder head is extremely hot.
Procedure
- Remove cylinder head, disassemble and clean.
- Heat cylinder head in a 400 degrees F (205 degrees C) oven no less than 30 minutes.
- Position hot head on arbor press table with valve seats up and guides inside two pipes.
- Center a 1/2 in. (12 mm) diameter drift punch on the valve guide and press guide from head.
- Install clip ring on new guide (flat edge toward chamfered end); cool guide on dry ice or freezer 30 minutes.
- Place chamfered end of cooled guide into bore; press in with arbor press until clip ring bottoms out.
- Machine exhaust port guide flat with aluminum surface using 11/16 in. spotface.
- Finish ream guide with 5/16 in. reamer; check valve seating.
Tools required
- Arbor press Amazon
- 1/2 in. drift punch Amazon
- 1-3/4 in. long pipe (1 in. I.D.) Amazon
- 11/16 in. spotface Amazon
- 5/16 in. reamer Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Oven temperature 400 degrees F (205 degrees C)
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.