rode the last race of the season in the hillbilly grand prix down here in southern mo. the first moto the quad ran perfect.about 10 mins into the 2nd moto, i blast out into a clearing and all of a sudden it starts pinging, backfireing, and going down on power.. i was told that if its leaned out and you want to save it, dont shut it off hot, so i let it idle on a long down hill section, and it slowing started clearing out... on the last lap it did the same thing again....finished the race (placed 3rd overall)"pissed off a bunch of 400 class kawa, suz, and honda's, but anyway, once at the trailer and changed into street clothes, the quad fired right up with no probs..
i run a 150 jet with what i think is a good burn on the plug and havent had any probs for a couple of month since i had ritter mill the head...i feel like i just got it hot, prob from the mud packed around everything and it couldnt cool... my question is should i be mixing some race gas in with the 93 pump gas im running, thinking that would lower the temp in the cylinder.. and with what i have described, whats the opinion on how bad it hurt it, should i tear it down and put a piston in it... i have been told that polaris pistons are generally junk to begin with and i have ridden this quad since new, and now 2 yrs old... any help? looking for some advice..

thanks
james

 

CMON GUYS ANY ONE OUT THERE?

 

That sounds like what was happening with my 2000 Scrambler 500. I checked everything that I could think of. I finially took it to someone to look at it. Found out that the Stator had gotten wet sometime and that the stator was breaking down when it was getting hot.
I am in the process of ordering one off of Ebay. Everywhere I could find they were 299. I hope that this helps out some. I took me about a year to finally figure it out.

Mark