Solenoid wiring. There are only three wires (other than the hot going to the + of the battery. The 10g coming from the engine,the red 16g coming from the ignition(has an inline fuse) and the yellow coming from the limit switch on the seat.I keep blowing the solenoids. Any help would be appreciated. Thank You, Kevin
Check the voltage to the solenoid coil when attampting to start the engine, you can also remove the 10ga. wire from the starter and check it that way too. with the starter motor spinning your voltage to the solenoid coil (the small wires) should be no less than 8-9 volts. With the starter spinning voltage to the starter should be about the same, anything less and you could be dealing with a bad connection at the battery, solenoid or the wire ends themselves. Of course all of this is assuming the battery is healthy and fully charged, weak batteries kill starter motors and starter solenoids, it makes them get real hot and fail prematurely.
SOURCE: No spark on lawn tractor
have you bypassed the ignition switch?? if you by pass that switch and you get spark you know its the switch
SOURCE: Murray Lawn Tractor Model 42576x92A will not start...no spark?
http://www.partsandservice.com/bin/ipl.cgi
I found a wiring diagram that I hope helps you out.
SOURCE: Craftsman garden tractor Mod # 917.257740 blows main fuse.
Try checking the battery - make sure it is not under rated - over rated and be sure the starter it's self isn't drawing too much amperage.
the battery may need replacing and for a temp fix - put in a larger fuse - say 50 amp.
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Gary @ Fix Ya
SOURCE: Craftsman Lawn Tractor, 18 HP, 44" Cut; No SWtart!
Check the by pass switches on the seat, clutch pedal, and check the fuses.
SOURCE: Craftsman lawn mower 917270810 will not start
When the ignition key is turned to the start position you should have a 12 volt supply to the low tention wire at the solinoid, if not you need to check if there is a 12 volt supply to the back of the ignition switch, if not there is a break in the wiring to one of these components, also check that there is a good eart to the chassis from the black battary leed.
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