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Those old ones were nasty if they were not removed yearly and cleaned and re greased ... Quick silver 24c grease is the best for greasing the splines... once you get the outer prop off, you'll have to cut the rubber off of the aluminum splined insert.. then after the rubber is off, you can heat the aluminum... I've cut them in half length wise with a saws all amd knocked them off with an air chisel.. it works better than heat . it's a b**** of a job ... we used to make pullers from 1/2" threaded rod to grip each blade.. apply presure and beat with a hammer... anything to avoid cutting them off... I did alot of them back in the day.. never fun.. I saw ocasions when we busted the retaining ring inside the lower unit before the prop would come off.. the new modualr inserts are a huge improvement...
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