Kohler KD 441 — Piston protrusion check / Assessing head gasket thickness
Adjustments · Cylinder head gasket
For the Kohler KD 441, from the Kohler service manual.
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Procedure
- Lock the cylinder with spacers 1.
- Use a dial indicator with base plate; reset to zero resting on a surface plate, then position against the cylinder head base plane.
- Take the reading; repeat in the other three points crosswise.
- Calculate the average of the four readings to get the piston protrusion.
- Choose the appropriate gasket according to the table.
Tools required
- Dial indicator with base plate Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Clearance A = 0.45÷0.50 mm
- Head gasket thickness range 0.70 to 1.25 mm per piston protrusion table
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.