Report "Hi my 2005 Polaris sportsman 500 ho does not want to turn over. it used to and idled fine but once the throttle was applied it did not work it just choked and died, i cleaned the air filter as the box was filled with oil and dirt washed the air filter did an oil change and cleaned the crab out twice I tried to start it this morning but it just backed fired and started to smoke. any idea why it is not working?"