John Deere — Valve Clearance Adjustment

Adjustments · Valve train

From a John Deere service manual — check it applies to your exact model before use.

Browse John Deere generators & specs →

Before you start

The valve clearance must be adjusted when engine is cold

Procedure

Rotate engine flywheel in running direction until No.1 piston (front) is at TDC on compression stroke
Insert timing pin into flywheel bore
Adjust valve clearance on No. 1 and 2 exhaust valves and No. 1 and 3 intake valves
Turn crankshaft 360° and reinsert timing pin
Adjust valve clearance on No. 3 exhaust valve and No. 2 intake valve

Tools required

JDE83 or JDG820 Flywheel Turning Tool Amazon
JDE81-4 or JDG1571 Timing Pin Amazon

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

Intake valve clearance 0.35 mm (0.014 in.)
Exhaust valve clearance 0.45 mm (0.018 in.)
Firing order 1-2-3 Amazon Amazon eBay

Source: John Deere 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.

More John Deere repair guides →