Grumpy,your assumption is correct and your valve comments are relevant,I did not have a problem with the motor last time I ran it,I found and freed the valve after I tried to start the motor and I lost compression and the motor was "popping" when I was trying to start it(the popping indicated a stuck valve to me)
At that stage I had not touched the carby,it was after I freed the valve that it wouldn't run without the choke,it was then that I replaced the air cleaner and and cleaned the carby.I had removed the rocker arm to free the valve.
How do you find DTC on these engines?I just done it by feel and visual and what clearance do you give the inlet and exhaust valves .006",008" ?
cheers
