I don't know that tractor, but they just need power (12 volts). Problem is you could potentially burn them out in as little as 5 to 10 seconds without a glow plug controller. The simple controllers are just a resistor to knock the voltage down. You could try applying 12 VDC to the glow plugs (usually a bank of them ganged together) for about 5 seconds. If the tractor doesn't start, WAIT AT LEAST A MINUTE before powering the plugs again and do it for less time each time. If you really want to understand the plugs real well, take one out and power it out of the tractor. CAUTION, Plugs will reach 1600 to 2000 degrees F. I don't recommend these tests unless you have some experience with electricity (and good health insurance). Try this at your own risk!
Might be a better idea to troubleshoot the problem and buy official replacement parts!
