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2000 Sportsman 500 won't start

ATV is getting good fuel, battery is good. It will not turn over or even think of turning over. New spark plug. It was running fine parked it for a couple weeks went to start again and nothing.

I am thinking it may be something to do with the carborator itself. Would like to get some expert opinion.

If it has spark,shoot a little starting fluid through the air box snorkel. If it tries to run,then I head for the carb next. If you have to remove the carb I'd rebuild it rather than just cleaning one..Polaris Sportsman 500 Carburetor Repair Kit Fits 1999-2000 Carb: Shindy 03-416 | eBay Also this model was in the year range of cam problems. Might not be a bad idea to check valve clearance and also the cam exhaust lobe for any damage like this one.http://forums.atvconnection.com/pola...d-cam-pic.html