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Rivernut

Minnkota question

9 posts in this topic

Why does my PD50 shake so bad from 40% on up? Blade nut is tight, warped blade? Thanks

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Is the prop mounted correctly (ie. on straight and square)?

Is the prop damaged and out of balance?

Does the prop shaft have any play in it?

Have you pulled the prop to make sure the shaft isn't wrapped with fishing line or anything like that?

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Take the prop off. Unless you have a dial indicator which you don't, on slow speed take a stationary object braced on one end and hold the other to the prop shaft. If there is any wobble that will account for the vibration. If it spins true your problem would be in the prop.

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I had a minkota that I had hit a rock with at a pretty good speed and after that it always wobbled at anything over 7. Must have bent something in the shaft Im guessing. Check the easy things listed above and if that dont fix it take it to a shop or just live with it.

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Might be a bent or worn shear pin on the output shaft...replace the shear pin. You can get the pin kits at most MK dealers.

Still wobbles..than it must be the prop out of whack..time to replace it.

Keep the old one for a spare just in case you bust a blade and need a temp.

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Thanks for the replies, I"ll post what I find.

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I've never seen that much line on a prop shaft before. And the shearpin was bent. No wonder it shook so bad. Took care of both, thinking that should be fixed. Thanks for the help.

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Removing line and new pin did not work. Looks like it might be the shaft.It is such a bad shake, either will fix or replace. Thing is, I fish the rivers so much, it is usually run at 50% or better.

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Put the prop from my transom motor, and no vibration whatsoever. Cheap fix, thanks for the input.

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