ok people i got a good one for you i have a 2002 polaris sportsman 500 ho that wont start unless i blow air in the breather tube then it fires right up and runs really good lots of power runs like it should took carb apart stator is good spark is good getting fuel like it should i have tryed everything i know to get this atv to start on its own but no luck if any one can help please do!!!!! lol

 

Welcome to the forum! First thing off top of my head is to check the foam seal around the air box air inlet and air duct inlet tubes. Foam could be blocking air flow?? OPT

 

Thank you and has good air flow thought it was fuel pump but runs good once started and you can ride it as long as u want.......the water pump is leaking you thing that could affect it any mechanical seal is bad and have one ordered

 

Have had em run good with water pump seals leaking a bit,(customers have kept the coolant topped off) but has it ever gotten hot?. Plus is air filter and prefilter clean? Plus did you replace needle and seat in the the carb, jets clean and open? Have you checked/adjusted the valves recently also? OPT

 

that i know of it hasnt gotten hot (got it from a friend) and air filter and pre filter is clean and havnt replaced the needle or seat and all jets are clean and i havnt messed with the valves yet might do that tomorrow and see what happens

 

Check these things out and keep us posted. OPT

 

ok i checked the valves and they was a little tight so i adjusted them but now i lost spark now now i have to chace down that problem hopefully just knocked a wire loose taking off the front fenders

 

ok i have good news i got my polaris going it was the valves i adjusted them and the no spark prob was in the thumb throttle box got it all fixed and starts right up and runs good