Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Tractor will not start if brake is not applied, it has no neutral switch. But could the brake be locked? Brake is on the right side of the transmission, just ahead of the right rear tire. A mechanical disc brake, the caliper held with two bolts, you can loosen the two bolts to see if the brake is locked.
Is the engine spinning, just not starting? Do you have spark? Do you have fuel to the carburetor inlet?
No, safety switches will not keep engine from starting. Need ti run spark test, remove spark plug, and with it grounded to the metal of the engine, crank and watch for spark.
OK< if you hold finger with rag over the spark plug hole does it have enough compression to move your finger? If it has spark and compression , put teaspoon of fuel into the spark plug hole, re-install spark plug and see if engine will fire for a few seconds. If it does, no fuel is getting through the carb.
Reverse switch can kill the spark, but it will not affect the fuel system. Do you have spark?