I have a premier engine 20-2802-1 PS2 that has a hard time going up a grade and also stalls at under 5 mph.
Turned it upside down, put it in a cradle and tested. The front wheels do not start moving until about 7 mph (back wheels move at 1 or 2 mph). Also, if I gently put a finger on the front wheels, they slow easily or stop. So do I need to replace something? What is the part that drives the wheels?