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Or a tidbit. To crank you need to supply 6 or 12 volts (whichever system you are using) to the starter. This done by supplying voltage from the battery thru the high current contacts of the starting solenoid to the starter "hot" terminal. (Assuming the starter is well connected to the tractor chassis via the starter case and mounting bolts.) The solenoid is energized by battery voltage and ground applied to it's energizing coil. Voltage is supplied thru the ignition switch: 1. "Start" position if no safety ground setup or thru a tranny safety switch then to the solenoid "hot".....(occurred post '65 in Fords). 2. Ignition switch in the "on" position and a start pushbutton on the dash, also if no safety ground setup. 3. Ignition switch in the "on" position also if using a a tranny safety switch to complete the ground circuit for the solenoid (pre '65 Fords). The voltage may be fused (inline fuse or panel mounted fuse on the dash or under the cowl somewhere. That voltage would go to one small terminal of the solenoid . Ground could come from several places. If there is no starting safety switch (transmission has to be in neutral to start) ground for the solenoid is via the mounting bracket for it (internally connected to the case). The case of the solenloid has to be in electrical contact with the tractor frame (maybe via some tin, but in contact). (On post '65 Fords, voltage just goes in one side of the safety switch and out the other ....2 wire system..to the solenoid.) If it (tractor) has a ground side safety start switch, there will be 2 small terminals (on the solenoid). The "other" small terminal will be "looking" for ground thru the safety start switch. Placing the tranny in "n" will allow you to depress the safety switch (Fords have it on the tranny top cover next to the gear shifter) which has one side grounded to the tractor housing (tranny top cover) and one wire on it going to the low side of the starting solenoid, thus when closing, allows current to flow thru the solenoid and energize it. If you try to start and hear the solenoid "click" and no start reaction, the problem is the high current path. If no nothing, it is the "control" low current path. Simple as that. If you follow what I said you will find your problem. If you don't have a voltmeter to trace voltage, use a light bulb of the proper voltage putting one side of the bulb (via a wire) to tractor chassis and a wire to the other that you can move about. Starting at the battery, following along till you loose light....that is where your problem is.....except for the ground side of the solenoid (no safety switch) or ground side of the safety switch for those type systems. Both those should be at ground potential and you shouldn't get any light there. HTH Mark
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