318 Wont Start
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Thread: 318 Wont Start

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    318 Wont Start

    I have a JD-318 that won't start. I turn the key and nothing happens, no lights or clicks. I checked the main fuses and both just inside of the cover in front of the dash are OK. The battery is charged to about 12.5 volts.
    The seat switch has been tapped shut, the break pedal and neutral safety switches are by passed at this point. (I had gotten this as it is except I've used it and its started fine for about a year then last winter I had parked it and went back to start it and nothing.
    Model # MOO318X101058*
    The main cable to the battery shows 12 volts, of coarse that goes directly to the battery.
    Any tips on troubleshooting this would be much appreciated.

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    Chuckv's Avatar
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    If you have not used it for quite some time, be sure that the PTO switch is turned off (both switches if you have a rear PTO.) The engine will not crank with it on. Below is a simple wiring excerpt of how the starter circuit and interlock switches are wired on the 318:

    Click image for larger version. 

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    Use a voltmeter to confirm that you have voltage at the S2 terminal of the key switch when in the RUN position -- that will verify that all the interlocks are either working or properly bypassed. Let us know what you find...

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    AJgrn78's Avatar
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    My money would be on a bad ground wire, a corroded / loose battery cable / terminal, or a bad battery. In the past few years I’ve had at least 4 batteries in different machines that seem to charge, read well over 12 volts, but the second you would put any load on them, they did absolutely nothing. Even if a safety switch was malfunctioning, you’d still see the battery light and oil pressure light come on when you turned the key on, wouldn’t you?
    BigJim55 likes this.
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