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1999 Polaris Sportsman 335 "clank" noise when idling


loudsubz

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Hey guys

 

new to us Polaris Sportsman 335. Bought from a neighbour who took good care of it over the years. Only thing that I'm curious about is a clanking noise when you start it up and the engine is idling. As soon as you raise the rpm or start driving the noise goes away. Since I'm new to ATV and not really sure what sounds are normal or not I thought I would ask the experts. The original owner always did the maintenance on the machine and for a 1999 only has 4100 km on it. 

 

Heres a short video showing the sound it makes

 

 

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  • 4 weeks later...

I did more searching online and watching some youtube videos where I heard very similar clank sounds. Some are saying it's the oil pump in the older units as they had to rev lower as clutch engagement was lower on those primary clutches.

 

I put my tach on it and was reading around 800 rpm when the manual says around 1200 is good.

 

I'm going to play around with that and see what I can do

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