Join Date: Dec 2014
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Re: Yanmar Dampner Plate (Flex Plate) problem
I've had them fail that soon. I think idling in neutral is tough on their life, maybe? What you describe hearing is very likely just that. Starts with a little ding sound...get worse. Bummer your engine is tough to remove....but you really have to haul and remove the prop? Cannot you just undo the four coupling bolts, the four mount studs, and a few other little things (heh!) and lift the whole mess out?
I have run for some time with the worn plate. But no noisy idling, just powered up quiet motoring. The rubber bits go first, then the springs start eating into the disks, falling apart, the whole thing destroys itself.
"...there are two kinds of opinions, those based upon tradition ... and those having something in their favor." B. Russell