How to Fix Your Riding Mower When it Won't Start -- Solenoid Troubleshooting

This #diy #repair video shows how to troubleshoot and fix your riding lawn mower when you turn the key and don't hear the #solenoid click.
If you do hear the solenoid click, watch this video to troubleshoot mower starting problems: https://youtu.be/ZLZA2P2bbYo
Web page describing the repair: https://www.searspartsdirect.com/diy/article/riding-lawn-mower-engine-wont-turn-over-or-click-video
Parts shown in the video: Solenoid -- https://www.searspartsdirect.com/part-number/192507/0071/917.html , Fuse -- https://www.searspartsdirect.com/part-number/STD391020/0098/980.html , Ignition switch https://www.searspartsdirect.com/part-number/532193350/0071/917.html , Brake switch https://www.searspartsdirect.com/product/16cni5baam-0071-917/id-176138 , Blade switch -- https://www.searspartsdirect.com/part-number/197802/0071/917.html .

Transcript: Today we're going to troubleshooting a riding lawn mower that doesn't do anything when you turn the key to start the engine—not even click. What is the significance of the click when you turn the key? When you hear the click, you know the starter solenoid coil is getting power from the battery through the ignition switch. If you don't hear that click, either the starter solenoid has failed or the starter solenoid coil isn’t getting power. To understand how we track down the problem, it helps to know how the starting system works. The positive, red battery cable connects to one of the two large terminal posts on the starter solenoid. The black wire connected to the other large terminal on the starter solenoid carries power to the starter motor to start the engine. A small red wire branches off the red solenoid terminal post to carry power through the ignition switch to the coil at the bottom of the starter solenoid. When you turn the key to the start position, the ignition switch sends power through the white wire and energizes the coil inside the solenoid. The coil closes an internal contact to send power from the red battery cable to the black wire, which powers the starter motor to spin the engine. So what can go wrong with the starting system? Well, a dead battery won't power up the starter system and could prevent the solenoid coil from clicking. To check the battery, we’ll use a multimeter to measure the DC voltage across the battery terminals. With the multimeter set to measure DC voltage, touch the red multimeter probe to the positive or red battery terminal and the black meter probe to the negative or black battery terminal. If the battery is good, it measures more than 12 volts DC. If it measures less than 12 volts, the battery is weak or dead and you've likely found the problem. A weak or dead battery won't power the starter solenoid coil. If the battery is okay, it means power is getting to the red battery cable. But, is voltage getting through the red battery cable to the red terminal post? To check that, let’s measure voltage at the red terminal post. With the multimeter set to measure DC voltage, touch the red meter probe to the red post on the starter solenoid and the black meter probe to the negative terminal on the battery. It should measure more than 12 volts. If the meter measures less than 12 volts, check the battery terminals and cable leads for corrosion. Clean corrosion off the battery terminals and battery cable leads with a wire brush—corrosion can prevent the red solenoid post from getting power. Recheck the voltage. If it still doesn’t measure more than 12 volts at the red post, replace the red battery cable. Now that we know the red terminal is getting power, the next step is to find out whether the solenoid coil gets power when you turn the key. If you measure voltage at the coil but the internal contact doesn't click, the starter solenoid is to blame. The solenoid clicks when it sends power to the starter motor. To check voltage on the solenoid coil wires, you need clip-on meter probes to hold the probes on the wires as you turn the ignition key, unless you have a helper to turn the key while you hold the probes on the wires. Pull the white and black wires off the spades of the solenoid. Set the multimeter to measure DC voltage. Clip the red meter probe to the white wire female spade connector and the black meter probe to the black wire female spade connector. Turn the ignition key to the start position, note the voltage reading on the meter display and then turn the ignition key off. If the multimeter measures battery voltage, it will be more than 12 volts. Replace the starter solenoid because the coil is getting power but not closing the internal contact to send power to the starter motor. Here's a video that shows you how to replace the starter solenoid. If it measures 0 volts, there’s a break in the circuit to the solenoid coil. The starter solenoid is likely okay, it's just not getting power. Time to test the coil circuit. We'll check the ground side of the circuit first. The black wire attaches to the solenoid coil

Видео How to Fix Your Riding Mower When it Won't Start -- Solenoid Troubleshooting канала Sears PartsDirect