To find the cause of no spark simply and easy using no more then your eyes and maybe a 12 volt test light, work through my Troubleshooting Procedure. YES an Ignition Ballast resistor runs hot especially if the ignition is on engine not running. Most common cause IS THE POINTS
NOTE you state The resistor gets power from the solenoid on the starter, can that have anything to do with the problem??
1) An Ignition Ballast Resistor (if so equipped, around 1.5 to 2 or so ohms resistance) gets its INPUT power from the Ignition Switch, and its OUTPUT wires to the ignition coil input and such uses a 6 volt coil on a 12 volt tractor so the ballast drops battery voltage down to 6 for a 6 volt coil.
2) If a 12 volt tractor uses a 6 volt coil and ballast PLUS A START BALLAST BY PASS CIRCUIT that feeds unballasted voltage to coil (ballast output) ONLY when the starter is cranking but otherwise the coil gets the reduced ballast voltage from the ballast output to coil.
Test the ballast and work my Troubleshooting Procedure An ignition ballast would read 1.5 to around 2 ohms through it WHAT DOES YOURS READ ?? If its an open circuit power cant get to the coil
If a 3 wire alternator is used with a resistor (instead of diode) to prevent run on after switch is off THATS NOT THE SAME AS AN IGNITION BALLAST What is your ballast used for, is it an Ignition Ballast (between ign switch and coil) or one used with the alternator (between alternator pigtail and coil) ???
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Today's Featured Article - Storing Your Tractor - by Staff. If your tractor is going to be stored for any length of time, a few precautionary measures are helpful in preserving various parts, also in avoiding future difficulty. Store tractor under cover. If impossible to place tractor under cover, be sure to cover air stack and exhaust pipe. Drain radiator and engine block. To avoid gum content collections, drain both fuel tanks and carburetor. Leave radiator and fuel caps slightly loose to protect gaskets. Block tractor up to remove weight from tires and to keep tires from contact with moist floor.
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