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Showing results for tags '518h purchased new in 1986'.
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I'm only talking about my 518 H it dies . I had no spark I thought the ignition module was bad that is when I pulled the fly wheel and tried to test it and started looking for a way to bench test it. SaveOld Iron had a post on how to do this , but I could not get it to test right. So I ordered a module and installed it . The tractor started right up ! So I thought I had it licked. It ran for 20 min and quit again? That is where all my headaches began. I went through all the wiring many times had almost the whole machine apart. I started replacing things as that is what the local dealer told me he would do any way if I brought it to him. No matter what I do the tractor will not run for more then 20 min or so and die and will not reassert until I let it sit for 1/2 hr. So I ordered the Hurley coil to see if that would work , thinking the coil was heating up. This is where I'm at ! I have replaced the ing module, ing coil, key switch, starter solenoid, gas filter .Have dismantled the carburetor completely and cleaned and checked inside and out . Have taken all micro switches off cleaned every switch and contact and all wires and contacts several times .Rang each wire to clear. Checked and cleaned all grounds . Changed all fuses . And the machine still will not run more the 20 min at a time. At one point I ran a hard wire from the positive side of the battery to the positive side of the coil and disconnected the wiring harness and I got the tractor to run for over an hour , but I could not make it happen again. Don't know if it was just a fluke or what. So now I just use the machine for 20 min and put it away. I have it down to a point that I know when It is going to die (NUTS) so I run it back in the shed !
