Yanmar — Timing Belt Removal
Repair & overhaul
From a Yanmar service manual — check it applies to your exact model before use.
Browse Yanmar generators & specs →
Before you start
- If the timing belt is disengaged the crankshaft angle becomes improper and pistons and valves may be damaged
Procedure
- Remove the 3 clips and then the 3 bolts, 3 seal washers, timing belt cover, gasket and insulator.
- Turn the crankshaft pulley clockwise to align timing marks of No.1 and No.2 camshaft timing pulleys with the BDC mark.
- Alternately loosen the two bolts to remove the timing belt tensioner.
- Remove the timing belt.
Tools required
- 8 mm hexagon wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Yanmar 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.