1972 evinrude 65 hp shifting issue

[bass1973]

. here is my prob I have a 1972 65 hp evinrude with the push botton type shifter with nuteral and forward and reverse so here is my prob . the motor will go into nutarel and reverse with no problems and then when in forward I can here some noises in the lower end like its trying to go into forward gear . on the muffs it seem to be going in all gears no problem but in the water is doesn't engage in forward . but the motor does rev up good but doesn't push the boat . any ideas would be great I just bought the motor abd the guy said he did a tune up . the motor fires up great please help thank you

 

[boobie]

Re: 1972 evinrude 65 hp shifting issue

First thing to do is check your prop hub for slipping. If that's okay it could be your forward gear and shift dog.

 

[bass1973]

Re: 1972 evinrude 65 hp shifting issue

How to a check the prop for slipping and if that's ok how do I check the shift dog

 

[racerone]

Re: 1972 evinrude 65 hp shifting issue

When the motor is not running it should be in forward gear !-------When you try to turn the prop by hand then what happens ?

 

[bass1973]

Re: 1972 evinrude 65 hp shifting issue

when the motor is off I can turn the prop alittle bit but does stop moving when I try to turn it

 

[bass1973]

Re: 1972 evinrude 65 hp shifting issue

If the hub has slipped I still can go into reverse and it does move the boat . So can the hub still have slipping in it

 

[boobie]

Re: 1972 evinrude 65 hp shifting issue

It can slip in forward because you're creating more thrust.

 

[bass1973]

Re: 1972 evinrude 65 hp shifting issue

so how do I check for slippage boobie im new to the fourom so all the help you can give me is great thank you

 

[bass1973]

Re: 1972 evinrude 65 hp shifting issue

hello boobie thanks for replying . what is the best way to check for slipperage on the prop or hub

 

[boobie]

Re: 1972 evinrude 65 hp shifting issue

Scratch a line across the prop and the center of the prop. Take it out and run it and if the marks get out of alignment, the hub is slipping.

 

[bass1973]

Re: 1972 evinrude 65 hp shifting issue

Thank you boobie for the info . I'll try it out this weekend . One more question for you . On the muffs the props seems to turn normal but once it's in the water in forward I throttle down a bit and the boats barely moves so from your experience do you think the hub could be spun . I believe this motor hasn't been in the water for along time . Bought it from a guy who had it in his garage thanks again for all your info thank you Eric

 

[boobie]

Re: 1972 evinrude 65 hp shifting issue

Take it out and try it and report back.

 

[bass1973]

Re: 1972 evinrude 65 hp shifting issue

With the motor off in forward gear I can turn the prop clock wise about 4 + inches

 

[racerone]

Re: 1972 evinrude 65 hp shifting issue

Can you rotate the flywheel by forcing the prop to turn ?

 

[bass1973]

Re: 1972 evinrude 65 hp shifting issue

Wich way should I turn it

 

[racerone]

Re: 1972 evinrude 65 hp shifting issue

Turn so the flywheel goes the correct way,---------If it turns then block the flywheel and see if you can still turn the prop.-----I am sure you can figure out a way to block the flywheel !!

 

[F_R]

Re: 1972 evinrude 65 hp shifting issue

Trying to turn it by hand is a futile test, unless it is really, really bad slipping. I don't know of a man alive that can produce 65 horsepower by hand. If he can, I'm staying away from him!!!

Do the mark and run test.

 

[racerone]

Re: 1972 evinrude 65 hp shifting issue

65 HP and the slipping torque value for a prop like that, are a totally different measurement.

 

[boobie]

Re: 1972 evinrude 65 hp shifting issue

He still has to take it out and run it. Or take it to a prop shop that has the tools to check it.

 

[bass1973]

Re: 1972 evinrude 65 hp shifting issue

Ok sorry for reporting back . I marked the prop to see if it was slipping took the boat out to the lake and put it into forward gear and it still was only moving the boat about 2 mph also it took the prop off and the marks on the prop where still ligned up and before a took the boat out I also drained the lower end fluid and filled it with new type c fluid . I noticed when I had the boat in the water in forward I could hear some noise in the motor to where it was trying to shift more into forward . I still had a good reverse and nutural . Anything else I should check out thanks guys for all the help