Evinrude impeller pin question

[joecb]

We are looking for a drive pin for the water pump impellor, correct?  That pin should be corrosion resistant and no need to be exceptionally strong. Any commonly available stainless steel will do the job. This is an entirely different application from the propellor drive ( shear) pin where material strength is a major consideration.

Joe B

• This reply was modified 2 years, 3 months ago by joecb.

[Mumbles]

Have a welding shop nearby?  If so, pick up a 1/8″  stainless welding rod, either stick or TIG and problem solved.  You might want to check the size of the hole in the driveshaft with a drill bit first though to make sure you get the correct size.  I don’t have a pin handy at the moment but I think they are closer to 3/32″ diameter. What size motor are you working on?

Using anything other than stainless is just asking for trouble as a nail or whatever will eventually rust out and fail. That would mean an overheat situation which could cost a lot more in the long run than a piece of the correct material would in the first place.  It’s always the smallest parts in a motor which are the most important.

[boscovius]

Sorry, somehow I got the idea this was a shear pin issue.  I know the drive pin in question and had to order one from Marine Engine.  Paid too much for it I’m sure.  Almost indistinguishable from the pin that holds the propeller seal housing to the skeg on my 35 big twin lower unit.

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