Thanks for the help on freeing the valves. The intake valve is working correctly and I can move the exhaust by force. The engine will rotate app. 1/2 way before being stopped by the stuck pushrod on the exhaust side. It appears to be in the down position. Have sprayed it with WD 40. It is a 3 HP Wisconsin on a Bolens B6A5S. Am I going to have to remove and dis-assemble the engine?