Yamaha 90TRL propeller issue

[brodius]

I recently purchased this 2008 motor and the cotter pin that locks the nut for the prop has rusted out and i cannot get it off. I have tried pentrating oil and tapping with a punch but i dont want to over do it. What is the best was to remove this so i can install new one without damaging anything? Photo attached.

 

[saltchuckmatt]

I recently purchased this 2008 motor and the cotter pin that locks the nut for the prop has rusted out and i cannot get it off. I have tried pentrating oil and tapping with a punch but i dont want to over do it. What is the best was to remove this so i can install new one without damaging anything? Photo attached.

Tough one. The only thing I can think of, is to cut or shear off each end so you can get the nut off, remove the prop and then have the clearance to drill it out.

 

[99yam40]

Tough one. The only thing I can think of, is to cut or shear off each end so you can get the nut off, remove the prop and then have the clearance to drill it out.

I was thinking the same thing.
maybe cut the brass nut to get it off and then the pin ends with a drimmel tool

 

[saltchuckmatt]

I was thinking the same thing.
maybe cut the brass nut to get it off and then the pin ends with a drimmel tool

I think you can save the nut by using a drill bit to cut the old rusty pin.

 

[brodius]

i sheared off eack end until i could get the brass nut off then i could drill the pin out. thanks for the help

 

[99yam40]

i sheared off eack end until i could get the brass nut off then i could drill the pin out. thanks for the help

that is good news.
how did you shear off the ends of the cotter pin with the nut in the way?

 

[saltchuckmatt]

i sheared off eack end until i could get the brass nut off then i could drill the pin out. thanks for the help

Excellent, now make sure you grease that prop shaft!

 

[brodius]

that is good news.
how did you shear off the ends of the cotter pin with the nut in the way?

used a small drill bit from the sides

 

[99yam40]

used a small drill bit from the sides

thanks, make sure you use a pin that will not rust away this time