Re: Polaris Crankshaft Problems?
Almost all 2 stroke and some 4 stroke engines use multiple piece cranks. Anything that uses press on roller bearings has to have some way to install and replace them. As for Polaris 600 triples specifically, I have a stock 96 with 7000 miles, no problems. A friend has a 95 that he piped, he had a pto side bearing go at around 6000 miles. I read somewhere recently (maybe here on this board) that the 95's had smaller oil holes for the pto bearing that was corrected in 96. On the other hand, piping the sled for 9500 rpm probably shortened his bearings life. His problem is the only one I've heard of.