Kubota WG972-GL-E3F — Adjusting the Valve Clearance
Adjustments
For the Kubota WG972-GL-E3F, from the Kubota service manual.
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Before you start
- The valve clearance must be checked and adjusted when engine is cold.
- After adjusting the valve clearance, secure the adjusting screw with the lock nut.
Procedure
- Remove the cylinder head cover and the spark plugs.
- Align the '1TC' mark on the flywheel and alignment mark on the rear end plate so No. 1 piston comes to compression top dead center.
- Check the valve clearance marked with a feeler gauge.
- If not within factory specification, adjust with the adjusting screw.
- Turn the flywheel 6.28 rad (360°) so No. 1 piston comes to the overlap position.
- Check the remaining valve clearance with a feeler gauge.
- Adjust with the adjusting screw if not within factory specification.
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 and exhaust valve clearance (cold): 0.145 to 0.185 mm (0.00571 to 0.00728 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.