JD 750 Compact Tractor - Starting Problems

My 1983 JD 750 Compact Tractor with 602 hours on it has a random starting problem. Usually it starts right up, but some times nothing happens when I turn the key. When this happens the indicator lights come on but nothing else happens, it doesn't turn over or make any noises. It acts like the battery is dead but my multimeter shows the battery to be ~13.6 volts. Some times if I turn the key off and on several times it will start, but not always. Some times when it acts up like this I hook up some jumper cables and it will crank right up, but not always. I discovered this weekend that if I short across the two terminals on the starter it cranks right up even if nothing else is working. It appears that there are only two possibilities; either the ignition switch or the voltage regulator. But I don't have a wiring diagram so I don't know if I am missing something. Once it starts, it run great.

Can anyone tell me where the problem is or how to find it? I don't want to start replacing parts until I find the problem!

Thanks!
Dave...

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Re: JD 750 Compact Tractor - Starting Problems hay Friday, September 18, 2009 (0)
Re: JD 750 Compact Tractor - Starting Problems John Heine Tuesday, September 15, 2009 (0)
Re: JD 750 Compact Tractor - Starting Problems Dale G. Basgall Tuesday, September 15, 2009 (0)
Re: JD 750 Compact Tractor - Starting Problems bontai Joe Tuesday, September 15, 2009 (0)

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