Every since I've had this it would force gas thru the carb and get the little air filter soaked w/ the oil gas mixture making it hard to start and running rich. I finally decided to find the cause and found the problem was in the tank vent tucked under the fan housing. On taking it apart I found it had a little felt filter and a check valve designed to let air in the tank but none out. I removed the check valve and so far no more fuel mix in the air filter. Apparently when the tank cooled off at nite it would let air in and when it warmed up the air couldn't escape so it would push fuel thru the carb.
Edited by ol' stonebreaker, April 30, 2016 - 09:02 PM.