Kubota — Valve Clearance
Adjustments · Cylinder head
From a Kubota service manual — check it applies to your exact model before use.
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Before you start
- Valve clearance must be checked and adjusted when engine is cold.
Procedure
- Remove the head cover.
- Align the 1TC mark line on the flywheel and projection on the housing so No.1 piston comes to compression or overlap top dead center.
- Check the valve clearance marked with a comma using a feeler gauge.
- If not within factory specifications, adjust with the adjusting screw.
- Firmly tighten the lock nut of the adjusting screw.
- Recheck the valve clearance after turning the flywheel.
Tools required
- Feeler gauge Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Valve clearance (when cold): 0.18 to 0.22 mm (0.0071 to 0.0087 in.)
Source: Kubota 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.