Engine starts fine, but won,t run normal . getting way to much gas, and there are no adjustments on this 3.75 sprint throttle free design engine. engine runs rough, and goes through gasoline like crazy. little tiny puffs of carbon like black smoke now and then. What is wrong or needs to be replaced?

Dave Dreyer, April 2009

Classic symptoms - change the diaphragm. Costs pennies and takes about 15 minutes.

phil_saunders(a)bigfoot.com

Phil Saunders, April 2009

sounds like the choke is stuck closed.

Larry, April 2009