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It is important for you to tell us if your tractor has a 6 volt or 12 volt electrical system & if the distributor is on the front of the engine or on the side. The troubleshooting is different based upon the configuration of your engine. Next time it does this, check quickly for spark then fuel. Get an old plug, open the gap to 3/16, ground it to a rust & paint free spot on the head, turn the key on & crank the engine. You have three possibilities: no spark, weak and/or intermittent yellow spark, or a bright blue spark. What is it? Next, check for fuel. Remove the bolt in the bottom of the carb; as long as the fuel is turned on, you should see gas flowing out of the carb. If not, the N has three fuel screens; one in the brass elbow, one in the top of the sediment bowl & one on the stem of the sediment bowl in the gas tank. All three probably need to be cleaned. If you have the fuel knob turned on all the way, it may be trying to feed off of the reserve inlet which is probably clogged. Put at least 2 gallons in the tank. As a good rule of thumb, a 1 - 2 minute run times is usually the condenser, ballast resistor, or vacuum lock....or, failure to turn the gas on. A 5 minute run time is usually fuel screens. A 15 minute run time is usually the ignition switch. A one hour run time & then restarts after it cools down is usually the coil. Please be sure to post back & let us know what the fix was. We all learn something if you tell us what worked!
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