Tractor won't start

I made sure everything was dry; checked, cleaned, re-gapped the spark plugs; checked the gap on the points; cleaned the sediment bowl and screen; and it still won't start. It turns over fine and tries to fire but never gets there.

Any help would be much appreciated.

Then check the rotation of the rotor and check to be sure the order is correct and a couple of the wires are not crossed.

Check compression first. Next, try to start it while someone squirts some carb/choke cleaner directly in the carb throat. If it fires, even briefly, then you have a fuel delivery problem; if not, you have an ignition problem.

If ignition, use a spark plug tester (any auto store) to verify that the plugs are actually firing. The fact that a plug might fire outside the combustion chamber is meaningless. It must fire under compression. Then simply test for spark all the way back to the distributor.

If a fuel delivery problem, remove the carb carefully and verify that the float bowl is full. If not, there is an obstruction between the tank and bowl.

If the bowl is full, the carb has to come apart. Damaged float needle/seat, incorrect low/high speed adjustment, wrong float level... all have to be checked. If the carb and/or manifold have been off, check for vacuum leaks.

TheRealRon