If you own a Craftsman lawn tractor or riding mower, you may find yourself needing to replace the ignition switch at some point. A faulty ignition switch can prevent your mower from starting or cause it to stall while you’re mowing. The good news is that replacing the switch is a fairly simple task. This article will provide you with a wiring diagram for the Craftsman 7 terminal ignition switch, as well as some helpful tips for completing the replacement process.
Understanding the Wiring Diagram
Before you begin replacing the ignition switch on your Craftsman mower, it’s important to understand the wiring diagram. The 7 terminal switch has 4 positions: off, accessory, run, and start. Each position has a specific set of connections that need to be wired correctly in order for the switch to function properly. Below is a diagram of the switch and its connections:
| Terminal | Position | Connection |
|---|---|---|
| 1 | Off | No Connection |
| 2 | Accessory | Black wire to lights and other accessories |
| 3 | Run | Red wire to starter solenoid and ignition module |
| 4 | Start | White wire to starter solenoid |
| 5 | Start | Red wire to ignition module |
| 6 | Accessory | Yellow wire to lights and other accessories |
| 7 | Run | Brown wire to regulator/rectifier |
As you can see from the diagram, the switch has connections for black, red, white, yellow, and brown wires. Each of these wires corresponds to a specific component on your mower, such as the lights, starter solenoid, and ignition module. It’s important to connect each wire to the correct terminal on the switch in order for everything to work properly.
Replacing the Ignition Switch
Now that you understand the wiring diagram, you’re ready to replace the ignition switch on your Craftsman mower. Follow these steps:
Step 1: Remove the Old Switch
The first step is to remove the old ignition switch. This is usually held in place by a nut on the back of the switch. Use a wrench or pliers to loosen the nut and remove the switch.
Step 2: Disconnect the Wiring Harness
Next, you’ll need to disconnect the wiring harness from the old switch. Use a pair of pliers or a small screwdriver to release the wires from the terminals on the back of the switch. Be sure to note which wires go to which terminals.
Step 3: Connect the New Switch
Now it’s time to connect the wires to the new ignition switch. Use the wiring diagram above to ensure that each wire is connected to the correct terminal on the new switch. Once all the wires are connected, push the switch back into the mounting hole and tighten the nut on the back of the switch.
Step 4: Test the Switch
Finally, test the new switch to make sure it’s working properly. Turn the key to the “off” position and make sure nothing is happening. Turn the key to the “accessory” position and verify that the lights and other accessories are working. Turn the key to the “run” position and make sure you hear the solenoid click. Turn the key to the “start” position and make sure the engine turns over.
FAQs
What if I can’t find a replacement switch with the same number of terminals?
If you can’t find an exact replacement for your Craftsman mower, you may be able to use a different switch with a different number of terminals. The key is to make sure that the new switch has the same positions as the old switch (off, accessory, run, and start) and that you connect the wires to the correct terminals based on the wiring diagram.
What if my mower still won’t start after replacing the ignition switch?
If your mower still won’t start after replacing the ignition switch, there may be other issues at play. Check the battery to make sure it’s fully charged and working properly. Inspect the spark plug and ignition coil for damage. If all else fails, consider taking your mower to a professional for further diagnosis and repair.
How often should I replace my Craftsman mower’s ignition switch?
There’s no set interval for replacing your mower’s ignition switch. However, if you notice any issues with starting or running your mower, it’s a good idea to inspect the switch and replace it if necessary.
Overall, replacing the ignition switch on your Craftsman mower is a fairly simple task that can be completed in just a few steps. By understanding the wiring diagram and following the steps outlined above, you can have your mower up and running again in no time.
