Thanks for all you help so far I do have an update, it was 40 degrees today and I can crank the engine over to a certian point. It cranks for about a second or 2 then stops at the same point every time. I then can maunually with the cresent wrench turn the engine past that point and repeat this process. When I pull the head off what should I be looking for. And remember as it warms up the engine turns over easier. My radiator was flushed many times last year and has all radiatorfluid in it. I can say that weather temp has a factor in this. And every time I go to start the tractor I put the clutch in. I have eleminated intake air and outgoing by takeing the airfilter hose off and removing the muffler. I belive this to be an engine stroke problem.