Knock at rear of yanmar 2000 engine

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Knock at rear of yanmar 2000 engine

Postby Mon » Thu Jun 13, 2019 10:51 am

Dropped the oil pan. no metal. Oil looked good. crankshaft and all rotating parts look good and feel tight. Tractor was taken care of But knocks when you turn the key. Could it be the flywheel bolt its hanging up on something? Very loud knock

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Re: Knock at rear of yanmar 2000 engine

Postby Aaron » Thu Jun 13, 2019 1:23 pm

We have seen that before where a bolt has backed out and hits something. We have also had one that had a loose bolt laying in the bellhousing that would clatter around occasionally.

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