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post #1 of Old 08-21-2010 Thread Starter
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Yanmar engine mounts keep failing 3JH4E

We have a beneteau 40.7 with a Yanmar 3HJ4E engine. Since November last year we have had 3 sets of engine mounts fail with no obvious cause. We replace the mounts then about a month later they snap again! A local marine engineering company have removed the engine and gearbox, checked alignment then refitted. We have just had another set of mounts fail again! We have contacted Yanmar but they have never heard of this fault... emm

The engine runs perfectly in neutral, forward and reverse

The engine mounts are the standard set fitted to all engines of this type

Has anybody had this problem before?


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