I have a 94 Polaris 600. It was used when I got it. It fouls plugs so quickly as to take the fun out of snowmobiling. (if that is possible!) I run the sled at about 6000 to 8000 ft elevation. Mostly tree crusing. Some wideopen throttle.

I know it needs to be rejetted
Question: I don't want to spend a fortune on jets, Is it safe to drop 2 jet sizes from where I am. And then if that doesn't fix it, drop 2 jet sizes from there?

If the engine is running lean, will the temp light come on before I have a problem?

Thanks
Mark

MarkB

If it fouls plugs that quickly are you sure it's the jets? How is the oil consumption? If it is too high then that could be your problem. Generally if you are able to ride the thing without bogging real bad you can't be too far off on your jetting. In any case if you do decide to rejet I would stick to single size reductions. Jets are not expensive so don't worry about it breaking you. They are only 2 or 3 dollars apiece. Watch your plug color and piston wash when you are jetting down because that can get real expensive in a hurry if you go too lean. Generally the engine light won't come on before you burn it down. There is a possibility too that it requires nothing more than a clip position change on the jet needle. Check with the dealer in your area to see what his recommendation is for jetting for that machine.

"Sled till you're dead"

Look under the hood at the jetting chart.See where it says the jet size for your average temp and elevation.Then you can take one to two sizes down from that and be safe.My guess is you bouight the sled from someone that rode it at lower elevations so it has too fat of jets for you.Remember the highr you go,the smaller jets you need.