#2.The sucking action of the starter solenoid failing from time to time. When this is the case, it may be necessary to replace the entire starter when the solenoid goes bad. To … The ignition starts only by jumping the solenoid. You can jump the mower with the battery in your car or with a portable jump-starter, but you can only use your car battery if your mower has a 12-volt battery. Share. Connect one end of a jumper wire from the battery's positive terminal, and touch the small lug on the engine starter solenoid that is marked S with the other end to test the starter ignition switch. I then have to shut it down by turning the fuel valve on the right side of the mower. Had no idea there was a 20amp fuse in the mix. If only one wire, then touch jumper wire to terminal and see if engine turns over. I used a new key switch and again, same story. My lawn tractor, Craftsman model 917.27639, wouldn't start except with the battery charger hooked up and set to start. Genuine Mountfield/Castelgarden Ride on Lawnmower Solenoid fits Castelgarden TC102, TC102HYDRO, TCP102, TCP102HYDRO, XDC140, … I'm confused. Truck will only start by crossing starter solenoid 14 Answers. When you turn the key to start, 12 volts are sent to the solenoid which causes the internal switch to engage, sending battery power to the starter cable from the battery cable. Touch the other end to the white wire on the starter solenoid. Nothing at all means that you're got a problem upstream of the solenoid, perhaps a failed switch or relay (if they use one). The key has a metal bit that touches both poles, sending electricity across the solenoid into the starter and turning on the mower's motor. Craftsman 2-Piece 16-in Rubber Strap Wrench ... Craftsman 8 pc. I traced the starter circuit in one of the wiring diagram so that you can see the path of voltage needed to spin the starter. I can start the mower by jumping the battery and ignition terminals on the starter solenoid. If that is the case then it could be the ignition switch. Turn the mower on once again. Is this a symptom of a bad solenoid or is there something else potentially going on here? © 2021 iFixit — Licensed under Creative Commons — Privacy — Check your wiring for a broken wire, loose connections either at the switch or on the solenoid. If the alternator is bad, the battery may not be capable of starting the engine. If the riding mower makes a heavy clicking or a rapid clattering sound when the key is turned to the start position, there is a problem with the battery or a part of the starting circuit. Removing the solenoid is the best way to test, that allows you see it actually open and close. The solenoid is a switch which applies battery power to the starter. When this happens the starter will spin. But if the mower doesn’t start, then keep diagnosing. Together, these parts help to charge the battery and start auxiliary power sources like headlights and power plugs. Replace any damaged spark plugs and try to start the mower again. If you have a 12V battery, the voltage should read very close to 12V. To determine whether the problem is the starter solenoid or another part of the lawn mower, test the solenoid's voltage reading with a multimeter. Mechanic's Assistant: What is the complete model and serial number of your machine? Red is the positive and black is the negative/ground. If the riding mower makes a heavy clicking or a rapid clattering sound when the key is turned to the start position, there is a problem with the battery or a part of the starting circuit. What can cause this? I've seen a lot of forums that talk about solenoids and relays, but I'm not sure if this is our problem, and if so, which part is bad. If the solenoid fails the mower won't start, and a failing solenoid will cause problems like, only working when it wants to, or shutting down the mower. Now you know how to start a riding lawn mower with a screwdriver. The starter solenoid is a small cylinder attached to the lawn tractor’s frame near the starter motor. Also, make certain that the poles are connected in the proper place as this is a common issue. If playback doesn't begin shortly, try restarting your device. George Bradley; Updated … The mower will start and run when the solenoid is jumped across. I have a Kubota zd326 that will only start if I jump across the solenoid and then it will not stop by the key. Removing the solenoid is the best way to test, that allows you see it actually open and close. The solenoid is checked by verifying that there is 12 volts coming from the key switch. Cable location to jump the starter while bypassing the solenoid. Checking the starter motor is easy, connect a 12 volt supply direct from the mower battery (+) to the supply wire at the starter. When the solenoid doesn’t respond properly, then you need to jump the solenoid. Battery is new and voltmeter reads 12.4. A Flat or Faulty Battery. Actually jump start of the solenoid is not a difficult task. Hello, We've got a Craftsman rider (~15hp) and it won't start on it's own, but it will start with the help of a car battery. Remember, this is only a temporary measure for testing. I have a riding mower that will only start after sitting for a while by jumping the solenoid. So, if you’ve done all the above check-ups and determined that only the starter solenoid is faulty, you can try to start the engine using the start motor only. The clicking noise comes from a part called the starter solenoid. Share this conversation. Craftsman Lawn tractor. The ignition will not turn over or engage the starter. If you turn the key in your ignition, and hear a clicking sound, it is probably your starter solenoid. If only one wire, then touch jumper wire to terminal and see if engine turns over. Figured the switch was fine, because it would only start if turned on, and would power off when I turned it off. Repair guides and support for a wide range of small engines. You're signed out. When you turn the key to start, 12 volts are sent to the solenoid which causes the internal switch to engage, sending battery power to the starter cable from the battery cable. However, once running for a bit it will start right up without issue if it’s turned off. If engine spins, then put spark plug back in and try. Show More. If solenoid clicks and you hear a hum but engine isn't turning over, remove spark plug and try again. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. On my Ariens, had the same issue, where, with a new battery, mower would not start, unless I jumped across the solenoid. It could be one of the safety switches like if you don't stay seated or the other ones, I don't remember them because I bypassed them. In addition, you can't use your portable jump-starter to jump a 6-volt battery if it doesn't have a 6-volt setting. It would then run fine, just don't turn it off or had to do the same thing to get it started again. If your car won’t start and the problem is not caused by a dead battery, then you might need to jump the starter solenoid to get your car moving again. If your riding lawn mower engine clicks when you turn the key but won’t turn over, there’s a pretty good chance your mower could have a bad starter solenoid. Tap to unmute. Replace the riding mower air filter. As of February 2011, you can purchase a Simplicity starter solenoid for about $10. - Small Engine Bypassing the Lawn Mower Key Switch (How to hotwire a lawn mower) Bypass the lawn mower key switch is an elegant way of saying hot-wire the lawnmower. The starter should turn the engine over and the engine should start. Make sure you have your rubber gloves on. 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