Kubota — Adjusting Valve Clearance
Adjustments · Cylinder head and valves
From a Kubota service manual covering: GL 11000, GL 7000, GL 9000, GL11000, GL11000-STD, GL11000-USA, GL6000, GL6000-AUS, GL6000-STD, GL7000, GL7000-STD, GL7000-USA…. Check it applies to your exact model before use.
Applies to: Kubota GL 11000, Kubota GL 7000, Kubota GL 9000, Kubota GL11000-STD, Kubota GL11000-USA, Kubota GL6000, Kubota GL6000-AUS, Kubota GL6000-STD, Kubota GL7000-STD, Kubota GL7000-USA, Kubota Z482-E2B-SEC-2 engine, Kubota Z482-E2B-SEC-3 engine
Before you start
- Valve clearance must be checked and adjusted when engine is cold.
Procedure
- Remove the head cover, the glow plugs and the timing window cover.
- Align the 1TC mark line on the flywheel with center of timing window for No. 1 piston.
- Check valve clearance with a feeler gauge.
- Adjust with the adjusting screw if not within factory specification.
- Turn flywheel 6.28 rad (360°) and adjust all other valve clearances.
- Recheck clearance and firmly tighten the lock nut.
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.)
Full service-parts list: Kubota GL 11000 →, Kubota GL 7000 →, Kubota GL 9000 →, Kubota GL11000-STD →, Kubota GL11000-USA →, Kubota GL6000 →, Kubota GL6000-AUS →, Kubota GL6000-STD →, Kubota GL7000-STD →, Kubota GL7000-USA →, Kubota Z482-E2B-SEC-2 engine →
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.