Hey all,

I just bought an '04 Sportsman 500 about a month ago and have noticed that the entire ATV vibrates when running high RPMs in low gear (around 5300 RPM and higher). I mentioned it to the dealer and he didn't think it should be doing that so he had me bring it in. The tech couldn't figure out what was causing the vibration so he called Polaris. Polaris told him that it was normal and that I shouldn't run in low gear at that high of RPMs. I have a hard time believing you can't run high RPMs in low gear but it's ok in high gear. Considering it doesn't vibtate in high gear at all, I think something related to low gear isn't balanced properly in the transmission. I have ridden a couple of other SP 500s and none of them have the vibration. Has anyone else experienced this vibration? If so, was it fixed under warranty and what was the cause? Thanks!

Steve

 

Steve, I have a 04.5 500 HO and have some noises that I'm worried about. I live in Paoli and it would be nice if you and I could ride each others to compare. I would be willing to meet you some where. We could ride at my place and on the roads here. Dobie

 

Hey Dobie,

Just saw your post. What kind of noises are you hearing? Polaris engines do seem to make a lot of noises, but from what I read on this forum, that's the nature of the beast. It's probably best to send me an email.

Steve

 

Steve, I sent you an email. Dobie.

 

I also have a little vibration when I run fast in low. My 02 did the same thing so I am not worried about it. If I remember correctly at 10mph (or 15mph) or less it is not an issue with mine.

 

Mine vibrates like that in low at high rpms as well,...
IMO the reason it wouldn't do it in high gear is because it's under load,.. engine has to work to get it to that 55 mph speed,..
in low gear it's basically "free revving"... I leave mine in high unless it's time to climb/ mud / bogs etc.