Re: Water Getting in Top Cylinder Yamaha 40hp Twin

[joesnuffy]

The tapper looks pretty good it got messed up just a hair toward the top near threrads. The key slot is like new on crank and flywheel. I did replace the crankshaft with a good in spec used crankshaft when I rebuilt the engine because the top journal for rod after I polished it was right at the limit for specs so I decided to get a good used crank not wanting to use the old one which would have given me trouble soon. I will lap the flywheel to crank as you said possibly the flywheel tapper might not match the used replacement crankshaft as-well-as it did the original crankshaft?

I will try to get the oem key at Yamaha today they might have to order it they mainly do motorcycles around here but that’s a pretty common part. Should I use loctite on the flywheel nut? I have the red and the blue loctite. One thing I don’t like is instead of a lock washer they have the moon washer or beveled washer concave not sure what you call it. The flywheel nut didn’t take much pressure to break which concerned me.

Thanks Again,
Joe

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