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I have a 20 HP 42 deck rider and it will not start unless i jump across the solenoid. I replaced the solenoid and same problem and the fuse is good.

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  • frostyfred
    frostyfred Apr 05, 2011

    Paul,

    Thanks for your advice. We tried the + on the trigger side of the solenoid and the starter would run. To clarify, the trigger contact would be downstream on the solenoid where the starter wire connects.

    From the beginning we never heard any clicks, thus i bought a new solenoid and it is possible that it is bad as well. Any way to check it? Where you mention the starter switch, i presume you mean the ignitiion switch.

    All of the wires look good and i tested the ignition switch with ohm meter and it appears to work and even unplugged the switch and jumped the connector leads the schematic shows should start the motor and nothing happens.

    Please send me your comments if you think it would be the ignition switch.

    Thanks
    Fred

  • frostyfred
    frostyfred Apr 05, 2011

    Paul,


    Thanks for your advice. We tried the + on the trigger side of the solenoid and the starter would run. To clarify, the trigger contact would be downstream on the solenoid where the starter wire connects. From the beginning we never heard any clicks, thus i bought a new solenoid and it is possible that it is bad as well. Any way to check it? Where you mention the starter switch, i presume you mean the ignitiion switch. All of the wires look good and i tested the ignition switch with ohm meter and it appears to work and even unplugged the switch and jumped the connector leads the schematic shows should start the motor and nothing happens. Please send me your comments if you think it would be the ignition switch.


    Thanks Fred

  • frostyfred
    frostyfred Apr 05, 2011

    Paul,

    I will try that in the morning and see what we find out. When you mention between the ignition switch and trigger side of the solenoid, Which I would refer to as the upstream side, when we put the + lead on this side of the solenoid, nothing would happen. When i place the lead on the other contact that goes to the starter, then the motor would start.

    Would this be indicating the solenoid still bad for the new part?

  • frostyfred
    frostyfred Apr 05, 2011

    Thats what i thought and when we put power on this sideof the solenoid, nothing would happen. I am guessing that the new solenoid is defective.

  • frostyfred
    frostyfred Apr 06, 2011

    Paul,

    Thanks for you comments. We check all of the wires with an Ohm meter and all wires are good. We tried the negative wire to the battery from the solenoid attachment bolt. I am suspecting that the new solenoid that i purchased is bad as the old one. When we attach the + lead from the battery to the trigger connector nothing happens on the solenoid, no clicking, nothing, When we add the + to the other solenoid connector that goes to the starter, then the motor will start.
    Unless you have any other ideas, i am going to order another solenoid and see what happens.

    Fred

  • frostyfred
    frostyfred Apr 06, 2011

    Thanks for you comments. We check all of the wires with an Ohm meter and all wires are good. We tried the negative wire to the battery from the solenoid attachment bolt. I am suspecting that the new solenoid that i purchased is bad as the old one. When we attach the + lead from the battery to the trigger connector nothing happens on the solenoid, no clicking, nothing, When we add the + to the other solenoid connector that goes to the starter, then the motor will start.
    Unless you have any other ideas, i am going to order another solenoid and see what happens.

    Fred

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Are you talking about jumping the starter solenoid? Have you checked all the power wires at the starter and starter solenoid? Maybe the starter has gone out.

Posted on Apr 06, 2011

  • Kelly Comstock
    Kelly Comstock Apr 06, 2011

    I think you are on the right track with the new solenoid.

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Hi.
i am assuming you mean the solenoid for the starter.
can you hear the solenoid click when you press the starter button. there should be quite a loud click. if you are touching the solenoid (keeping clear of any moving parts) you will feel it.

if it does not click, then the problem could be with the starter switch or the wires to the solenoid.


the easiest way to test the solenoid will be to touch a wire from the battery +ve to the "trigger" on the solenoid. only touch it for 1/4 second. if there is no click, you may still have a faulty solenoid.
if the starter spins, then the problem is the switch or wires. check and clean all the electrical connector plugs, and the switch itself.

Posted on Apr 05, 2011

  • 2 more comments 
  • paul miles Apr 05, 2011

    hi fred.

    if the starter spins when you put power on to the trigger then it sounds like the solenoid is ok.
    it may be worth putting the old one back on and testing that one in the same way.
    you may find that it was ok.
    if you have access to an ohm meter, test the wire that goes from the ignition switch plug to the solenoid trigger wire for continuity. some of the connector plugs may have become corroded, or the wire may have broken.

    if your ohm meter is a multi test meter, it would be well worth you checking the voltage going in to the ignition switch, and coming from the trigger wire for the solenoid.
    from the tests you have done and the symptoms you describe, i would expect to find a corroded plug, or a broken wire, either between the battery and the ignition switch, or between the ignition switch and the trigger.
    let me know if you have any more problems.
    paul

  • paul miles Apr 05, 2011

    the trigger will be the thinnest wire going to the solenoid, normally a spade connecter. the main power cables for the starter and the battery will normally be much thicker and held on with nuts.
    a wire from the battery +ve to the thin trigger wire should activate the solenoid, which in turn provides power to the starter

  • paul miles Apr 06, 2011

    hi.
    the only other thing to check is the earth from the solenoid.
    make sure that the bolts holding the solenoid in place are clean and secure. it may be worth running a wire from the solenoid mounting to the -ve line of the battery and trying the +ve wire test again, just in case there is a faulty earth on the solenoid.
    if the +ve wire to the spade connector still produces no result, then it does look like the new solenoid is also faulty

  • paul miles Apr 06, 2011

    it does sound like you have been unlucky on the new solenoid.
    lets hope you have more luck with the next one.

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