Dad's cub, Bingo, is running very rough ONCE you can get him started.
He is very hard to start when cold and, after running a while, will not start after engine reaches op. temp. and fuel starts dripping from the carb. Here is what I know:
Mag is firing on TDC compression stroke on #1.
Using champion D21 spark plugs; new plug wires; mag as been reworked. Plug wires are connected in the right order.
Fuel is getting to the carb. I removed the carb and cleaned it twice; no better.
I have checked the fuel level in the float bowl...OK there.
The carb and intake are good and tight.
The only thing I haven't done is double-check the valve adjustments. I am going to that later today. I will add that we did not have this problem until we had to replace the head. Before that, the tractor started fine and ran like a champ. Anything else I have overlooked I might need to check