prop hit the bottom and shaking

[csisommout]

Hi, all

I have 1964 evinrude 28hp 2cylander, model# 28402m. The prop hit the rock
It is shaking when running it, the prop damaged some.

What would be damaged normally? It go in gear ok. I am thinking about buying a new prop. What would be the pitch size for it? Is I boats selling that?

Any advice and imfo will be greatly appreciated.

 

[AlanR]

Re: prop hit the bottom and shaking

How hard did you hit it? How much prop damage are we talking?

Could be a bent prop shaft.

 

[csisommout]

Re: prop hit the bottom and shaking

Very hard, I would say 20 % damaged on prop, bent a little and the edge shows a litle flate sign. Thank you for reply.

 

[FunInDuhSun]

Re: prop hit the bottom and shaking

Yeah, the shaft might be toast.
Take the prop off and see if the shaft runs true.
As far as the prop, look for numbers stamped on the hub. That'll give you the specs.
It might be cheaper to have yours rebuilt.

 

[csisommout]

Re: prop hit the bottom and shaking

Took off the prop, theshaft is still tight turns smoothly. I think just a prop needs rebuildor new.

any other inspection that I need to do before I run it again?
Is it ok to run it in barrel and see?

Thank you.

 

[AlanR]

Re: prop hit the bottom and shaking

Did you check around the shaft for any oil? There are seals there that could be damaged... If You dont see any oil, Id go ahead get the prop rebuilt and Just go ahead and test it in the tank, make sure you dont have any crazy vibrations.

 

[tashasdaddy]

Re: prop hit the bottom and shaking

the more you run it, the better chance you have to damage the seals.

 

[csisommout]

Re: prop hit the bottom and shaking

There is no sign of leaking oil around theprop shaft, but just turned on motor in the tank, it is shaking without prop on and tent to die at idle setting speed that I had before.

Does that mean i have to take a gearcase apart? while I am in there what do I need to replace? Thank you all for info.

 

[csisommout]

Re: prop hit the bottom and shaking

Any advice what to look for whem I am openning up the lower unit gearcase? thank you.

 

[milmat1]

Re: prop hit the bottom and shaking

Any advice what to look for whem I am openning up the lower unit gearcase? thank you.

Most likely you bent the prop shaft that the prop bolts onto....Just my Thought !