How to replace the ignition switch on a riding lawn mower
If your ignition switch on yor riding mower is no longer working, or requires a flathead scewdriver to turn, it may be time to replace it. If the lawnmower won't turn over or it won't stop when you cut the key off, the problem is most likely the ignition switch. You can usually find replacement ignition switches at home imporvement stores or lawn and garden stores. Many models may cost less than $20, so replacing the ignition switch is usually not too expensive. One of the main reasons to replace the ignition switch is for safety reasons. If you have kids around, you want to make sure a key is required to start the riding lawn mower to prevent accidents.
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Step 1: Disconnect the negative battery cable. This is usually the black cable, but double check by looking for a "-" sign on the battery.
Step 2: Open the hood to access the back side of the ignition switch.
Step 3: Disconnect the wiring harness from the ignition switch. You may be able to pull the entire wiring harness off by hand. However some older models require using a flat head screwdriver to remove the wires.
Step 4: Use a small screwwdrive to push down the locking tabs on the ignition switch while pushing it out towards the seat.
Step 5: Remove the ignition switch compltely and verify the new one looks similar and has the same type of plug connection.
Step 6: Install the new ignition switch by inserting it in the hole until it locks in place, making sure it is facing the right direction.
Step 7: Plug in the wiring harness to the new ignition switch by pushing the harness onto the switch.
Step 8: Close the hood and reconnect the negative battery terminal. Start the mower to test the new switch is working properly.