I thought this was other peoples problem. SP500, with 325 miles on it. Today, in 6 inch snow the Belted started to slip a few times, I can think of anything else. A few times when gunning the engine it sounded like I was 'reving' it, with little response. Why do belts slip, should I do something about it, if its wet, how or where did water go in? Thanks, this site is great.

 

You may have ingested a small amount of snow into the CVT vent line. The snow may have been thrown into the air by your tires. This is actually very rare.
Also, check the seal around the CVT, it may not be seated correctly.
If you do get the belt wet, it is easy to fix. Just put the machine in neutral, and rev the engine about half throttle for a little bit. This will dry the belt right up.

 

This may sound pretty dumb, but could it be that you are actually getting wheelspin and thinking that its belt slippage? I have driven my Xplorer in very deep snow with the pedal to the metal and only manage about 25-30 mph and in my case its wheelspin.

 

if it is snow causing it is the first time ever hearing that snow caused the belt to slip. but anything is possible.

 

I have been riding in snow on Polaris quads since 94 and have been with literally hundreds of others and have never heard of belt slippage due to cold or snow. Believe me, if there was a belt problem of "any" kind, the other brand owners I ride with would have told me about it. Its not just on this forum that people comment on the benefits and disadvantages of other quads!!

 

Make sure the belt cover seal is in the groove where it should be. Also check to be sure the breather snorkels are connected. I saw one once where somebody had taken the cover off and when they put it back on, they didn't connect the rubber hose between the breather and the cover.
I never yet saw a Polaris belt slip where the seals were good, but I never saw one 'drown' yet either (thank goodness)

 

I'll tell that driving in deep fluffy snow CAN cause a small amount of snow to get sucked into the clutch housing, which will cause the belt to slip. This only happenned to me once, and I said, "what the *%&#". After a few seconds, and not continuing full bore into the fluffy stuff, all was well. I put a bug screen over the belt housing intake, and never had a problem since.

 

maybe you are like me i went riding at some sand dunes and thought i was overreving or slipping
then i realized i was still in low.