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What is a vibration damper? Where is it mounted?MY YANMAR 3YM30 IS SHAKING ITSELF TO BITS. It is 9 years old and 3000 hours and has run perfectly until 30 hours ago. The engine runs perfectly in neutral to full RPM. It also runs smoothly in reverse at all speeds. In forward gear, it runs ok until I shift into neutral and try to shift back into forward.
Then the engine starts to shake at 1000rpm and shakes horribly and starts a clacking / grinding noise at anything over 1200 rpm. It is truly frightening
On the advice of the Singapore dealer, I replaced the engine mounts and vibration damper. No improvement at all.
Finding an available mechanic here is very difficult, so any suggestions what to look into would be most appreciated.
I suppose you're based in Singapore? You could dismantle the gearbox and bring it to CLLS for them to service or contact Bobby Ee from Esgrit for some help/repair.