starting issues with these tractors can be different one from another. Keyswitches ,safty switches on the clutch pedal undersized wireing.I pulled my hair out fixing this and that but could not get it to stay fixed long term. Until I took the advise of those here,I placed a starter relay in the start circuit start wire.It does not take much voltage/amprees to pull the relay ,taking load off above circuits.But if your starter is no good this will not help.But it sure took care of my issues.