If you’re having trouble with your John Deere riding mower, one of the first things you should check is the solenoid. A solenoid is a device that uses electricity to create a magnetic field, which in turn moves a metal plunger. This plunger is what engages the starter motor, so if the solenoid is not working, your mower will not start.
There are a few different ways to test a solenoid. One way is to use a multimeter to check for continuity. To do this, set the multimeter to the ohms setting and then touch the probes to the two terminals on the solenoid. If the solenoid is working, the multimeter will show a reading of zero ohms. Another way to test a solenoid is to use a jumper wire. To do this, disconnect the wire from the solenoid that goes to the starter motor and then touch the jumper wire to the terminal on the solenoid that the wire was connected to. If the solenoid is working, the starter motor will engage and the mower will start.
If you have tested the solenoid and it is not working, you will need to replace it. Replacing a solenoid is a relatively simple procedure, but it is important to make sure that you get the correct solenoid for your mower. You can find the correct solenoid by looking up the model number of your mower in the John Deere parts catalog.
Visual Inspection of the Solenoid
Inspecting the solenoid visually is a critical first step in troubleshooting any potential issues. Here’s a detailed guide to help you through the process:
1. Identify the Solenoid
Locate the solenoid, typically a cylindrical device with two electrical terminals and a plunger in the center. It’s often mounted near the starter motor or engine.
2. Check for Physical Damage
Examine the solenoid’s exterior for any signs of damage, such as cracks, dents, or melted insulation on the wires. Also, look for any loose or disconnected wires that may be causing electrical issues.
3. Clean the Solenoid
Use a wire brush or sandpaper to remove any dirt, corrosion, or debris that may have accumulated on the solenoid’s terminals or exterior. Ensure that the terminals are clean and make good contact with the wire connections.
4. Inspect the Plunger
With the solenoid disconnected from the electrical system, manually operate the plunger by pushing it in and out. It should move smoothly and return to its original position when released. If the plunger is stuck or moves erratically, it may indicate a mechanical issue that requires professional attention.
To assist you further, here’s a table summarizing the visual inspection steps:
| Step | Action |
|---|---|
| Identify Solenoid | Locate solenoid near starter or engine |
| Check Physical Damage | Inspect for cracks, dents, loose wires |
| Clean Solenoid | Remove dirt, corrosion from terminals |
| Inspect Plunger | Manually operate plunger, check for smooth movement |
Electrical Testing of the Solenoid
Electrical testing is crucial in diagnosing a faulty solenoid on your John Deere riding mower. Follow these steps to perform the test:
1. Safety Precautions
Before any electrical testing, disconnect the battery terminals to prevent electrical shock. Ensure your safety by wearing protective gear and working in a well-ventilated area.
2. Continuity Test Using a Multimeter
Use a multimeter set to the lowest ohms range (usually 200 ohms). Place the multimeter’s probes on the solenoid’s two terminals. Continuity should be present, indicating a closed circuit when the solenoid is engaged. If the multimeter reads an open circuit, the solenoid may be faulty and require replacement.
3. Voltage Test Using a Voltmeter
Set the voltmeter to measure DC voltage (usually 20 VDC). Connect the voltmeter’s positive lead to the positive terminal of the solenoid and the negative lead to the negative terminal. When the solenoid is engaged, the voltmeter should display the battery voltage. If the voltage reading is below 12 volts, there may be a problem with the battery, electrical wiring, or solenoid itself.
4. Load Test Using a Jumper Wire
Disconnect the wire harness from the solenoid. Connect a jumper wire from the positive battery terminal to one of the solenoid’s terminals. Ground the other solenoid terminal to a bare metal surface on the mower deck. If the solenoid engages, the electrical system is functioning properly. If the solenoid does not engage, the solenoid is likely faulty and needs to be replaced.
| Test | Description |
|---|---|
| Continuity Test | Checks for closed circuit when solenoid is engaged |
| Voltage Test | Measures battery voltage at the solenoid |
| Load Test | Verifies solenoid’s ability to engage under load |
Troubleshooting Common Solenoid Issues
1. Checking Electrical Connections
Loose or damaged electrical connections can prevent the solenoid from receiving the necessary power. Inspect the wires connecting the solenoid to the battery, starter, and ignition switch for any breaks, corrosion, or loose terminals. Tighten any loose connections and replace any damaged wires.
2. Testing the Solenoid
To test the solenoid directly, you can use a multimeter. Set the multimeter to the ohms setting and connect the probes to the solenoid’s two terminals. A reading of 0 ohms indicates a closed circuit, while a reading of infinity indicates an open circuit, indicating a faulty solenoid.
3. Advanced Troubleshooting
If the electrical connections are secure and the solenoid tests positive, the problem may lie within the solenoid’s internal components. Here are some further steps to consider:
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Inspect the Plunger: The plunger is responsible for making contact between the battery and starter. Check for any visible damage or wear on the plunger, and make sure it moves freely within the solenoid.
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Check the Coil Resistance: Use a multimeter to measure the resistance across the solenoid’s coil. Compare the reading to the specifications provided in the John Deere service manual. A significant deviation from the specified resistance may indicate a faulty coil.
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Test the Ground Circuit: The solenoid relies on a good ground connection to operate. Inspect the ground wire connecting the solenoid to the battery for any breaks or corrosion. Clean any corrosion and ensure a secure connection.
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Check the Starter Motor: If all else fails, consider testing the starter motor. Disconnect the starter from the solenoid and connect it directly to the battery. If the starter still fails to engage, the problem may lie with the starter itself rather than the solenoid.
Safety Precautions for Solenoid Handling
1. Disconnect the Battery
Always disconnect the battery before servicing the solenoid to prevent electrical shocks.
2. Wear Safety Gear
Wear gloves and safety glasses to protect yourself from electrical sparks and sharp edges.
3. Use Proper Tools
Use insulated tools designed for electrical work.
4. Inspect the Solenoid
Inspect the solenoid carefully before testing it. Look for any visible damage, such as cracks or broken wires. If any damage is found, replace the solenoid immediately.
Testing the Solenoid
a. Connect a multimeter to the solenoid terminals.
b. Set the multimeter to the ohms scale.
c. If the solenoid is working properly, you should get a low resistance reading (less than 1 ohm) when the terminals are connected.
5. Handle with Care
Solenoids can be heavy and awkward to handle. Use care when moving or installing the solenoid to avoid injuries.
Removal and Replacement of the Solenoid
To remove the solenoid, first locate it on the mower. It is usually attached to the starter motor with two or three screws. Once you have located the solenoid, disconnect the wires from it. Then, use a wrench to remove the screws that are holding it in place. Once the screws are removed, you can pull the solenoid straight off.
Inspecting the Solenoid
Once you have removed the solenoid, inspect it for any damage. Look for any cracks or breaks in the housing. Also, check the contacts to see if they are clean and free of corrosion. If the solenoid is damaged, it will need to be replaced. The replacement procedure is as follows:
Replacing the Solenoid
1.
Place the new solenoid in the same position as the old one.
2.
Secure the solenoid with the screws that you removed earlier.
3.
Connect the wires to the solenoid. Make sure that the wires are connected to the correct terminals.
4.
Test the solenoid by starting the mower. The mower should start immediately.
| Symptom | Possible Cause | Solution |
|---|---|---|
| The mower will not start. | The solenoid is not getting power. | Check the wires that are connected to the solenoid to make sure that they are connected securely. Also, check the fuse that is responsible for the solenoid to make sure that it is not blown. |
| The mower starts but then immediately stops. | The solenoid is not engaging the starter motor. | Check the contacts on the solenoid to make sure that they are clean and free of corrosion. If the contacts are dirty, you can clean them with a wire brush. |
| The mower starts but the starter motor continues to run. | The solenoid is not disengaging the starter motor. | Replace the solenoid. |
Troubleshooting Electrical Connections
Electrical connections can be a source of problems on any machine, including John Deere riding mowers. Here are some tips for troubleshooting electrical connections:
Check the battery
A weak or dead battery can cause all sorts of electrical problems. Start by checking the battery terminals. Make sure they are clean and tight. If the terminals are corroded, clean them with a wire brush. You can also try charging the battery. If the battery is still weak or dead, it may need to be replaced.
Check the fuses
Fuses are designed to protect electrical circuits from damage. If a fuse blows, it means that too much current has flowed through the circuit. Check all of the fuses in the mower. If a fuse is blown, replace it with a new fuse of the same amperage.
Check the wiring
Loose or damaged wiring can also cause electrical problems. Inspect the wiring harness for any loose connections or damaged wires. If you find any loose connections, tighten them. If you find any damaged wires, repair them or replace the wiring harness.
Test the solenoid
The solenoid is an electrical switch that controls the flow of current to the starter motor. If the solenoid is not working, the starter motor will not be able to turn over the engine. To test the solenoid, disconnect the wire from the positive terminal of the battery. Touch the wire to the positive terminal of the solenoid. If the solenoid clicks, it is working properly. If the solenoid does not click, it may need to be replaced.
Connecting Wires
When connecting wires, it is important to use the correct type of connectors. Crimp connectors are the most common type of connector used for electrical connections. Crimp connectors are made of metal and have a plastic insulation cover. To crimp a connector, you will need a crimping tool. Crimping tools come in a variety of sizes and shapes. Choose a crimping tool that is the right size for the connector you are using.
Crimping a Connector
To crimp a connector, insert the wire into the connector barrel. Crimp the connector with the crimping tool. Make sure that the crimp is tight enough to hold the wire securely. However, do not crimp the connector too tightly, as this can damage the wire.
| Step | Description |
|---|---|
| 1 | Insert the wire into the connector barrel |
| 2 | Crimp the connector with the crimping tool |
| 3 | Make sure that the crimp is tight enough to hold the wire securely |
Cleaning and Maintenance of the Solenoid
To maintain the longevity and optimal performance of your John Deere riding mower’s solenoid, regular cleaning and maintenance are crucial. Here’s a comprehensive guide to cleaning and maintaining your solenoid:
Basic Tools and Safety
Before commencing maintenance, gather the necessary tools, including a wrench set, screwdrivers, and cleaning supplies. Ensure you disconnect the battery to prevent any electrical hazards.
Locate the Solenoid
Identify the location of the solenoid on your mower’s engine. It’s typically a small, cylindrical component with electrical wires connected to it.
Disconnect the Wires
Carefully disconnect the electrical wires from the solenoid using the appropriate wrenches or screwdrivers. Label the wires for easy reconnection later.
Remove the Solenoid
Locate the bolts or screws that secure the solenoid to the engine. Remove these fasteners and gently lift the solenoid off its mounting bracket.
Clean the Solenoid
Using a soft cloth or brush, remove any visible dirt or debris from the solenoid’s exterior. Inspect the electrical terminals for corrosion or damage. If necessary, use a wire brush or sandpaper to clean the terminals.
Inspect the Coil
Visually examine the solenoid’s coil for any breaks or damage. If any issues are detected, it may be necessary to replace the coil.
Lubricate the Solenoid
Apply a small amount of electrical contact cleaner or high-temperature grease to the solenoid’s moving parts. This lubrication will reduce friction and extend the life of the component.
Reinstall the Solenoid
Carefully position the solenoid back onto its mounting bracket and secure it with the bolts or screws. Reconnect the electrical wires according to the labels you made earlier.
Test the Solenoid
Reconnect the battery and start the mower. Listen for the solenoid’s characteristic “click” when the ignition switch is turned. If the mower starts smoothly, it indicates that the solenoid is functioning correctly.
| Maintenance Schedule |
|---|
| Inspect and clean the solenoid annually or after every 50 hours of operation. |
| Replace the solenoid every 3-5 years or as needed. |
Troubleshooting Ignition Switch Problems
When troubleshooting ignition switch problems on John Deere riding mowers, there are several common issues to check:
1. Fuses
Inspect the fuses and replace any that are blown. Locate the fuse box and check the ignition fuse. If the fuse is blown, it will need to be replaced. Consult your mower’s manual for the location and type of fuse required.
2. Battery
Check the battery voltage using a multimeter. If the battery is below 12 volts, it may need to be charged or replaced. Ensure the battery terminals are clean and free from corrosion.
3. Safety Switches
Inspect the seat safety switch and the PTO safety switch. Make sure these switches are engaged and functioning correctly.
4. Ignition Coil
Check the ignition coil for continuity using a multimeter. If the coil is faulty, it will need to be replaced.
5. Spark Plug
Remove the spark plug and inspect it for damage or fouling. Clean or replace the spark plug as needed.
6. Wiring Harness
Inspect the wiring harness for any loose connections or damaged wires. Repair or replace any faulty wiring.
7. Ignition Switch
Test the ignition switch using a multimeter. If the switch is faulty, it will need to be replaced.
8. Solenoid
Check the solenoid for continuity and proper operation. Here’s a detailed walkthrough:
| Step | Instructions |
|---|---|
| 1 | Disconnect the battery. |
| 2 | Locate the solenoid, usually near the starter motor. |
| 3 | Use a multimeter to test the solenoid terminals. |
| 4 | Check for continuity between the large terminal and the ground terminal. |
| 5 | If there is no continuity, the solenoid may be faulty and needs to be replaced. |
| 6 | Check for voltage between the small terminal and ground. |
| 7 | When the ignition switch is turned to the “start” position, there should be voltage. |
| 8 | If there is no voltage, check the wiring harness or ignition switch. |
Checking the Solenoid
Disconnecting the solenoid connectors will allow you to check the solenoid. Using a multimeter, test the continuity between the two terminals. If the solenoid is functioning properly, the multimeter should display a low resistance reading or a closed-circuit symbol. A high resistance reading or an open-circuit symbol indicates a faulty solenoid.
Resetting the Solenoid Valve
If the solenoid is not functioning properly, it may be possible to reset it. This involves removing the solenoid from the carburetor and cleaning the valve seat and plunger. Reassemble the solenoid and reconnect it to the carburetor. Start the engine and check if the solenoid is functioning properly. If the solenoid is still not functioning properly, it will need to be replaced.
| Step | Action |
|---|---|
| 1 | Disconnect the solenoid connectors. |
| 2 | Remove the solenoid from the carburetor. |
| 3 | Clean the valve seat and plunger. |
| 4 | Reassemble the solenoid. |
| 5 | Reconnect the solenoid to the carburetor. |
| 6 | Start the engine. |
| 7 | Check if the solenoid is functioning properly. |
Preventing Solenoid Failures
To prevent solenoid failures on your John Deere riding mower, follow these tips:
1. Keep the solenoid clean.
Dirt and debris can build up on the solenoid over time, which can interfere with its operation. Clean the solenoid regularly with a clean cloth or brush.
2. Inspect the solenoid wire connections.
Loose or damaged wire connections can prevent the solenoid from receiving power. Inspect the wire connections regularly and tighten or replace any loose or damaged wires.
3. Test the solenoid.
You can test the solenoid by using a multimeter to measure the resistance across the solenoid terminals. The resistance should be between 2 and 4 ohms. If the resistance is too high or too low, the solenoid may be faulty and should be replaced.
4. Replace the solenoid if necessary.
If the solenoid is faulty, it should be replaced. To replace the solenoid, follow these steps:
- Disconnect the negative battery terminal.
- Locate the solenoid.
- Remove the nuts or bolts that hold the solenoid in place.
- Disconnect the wires from the solenoid.
- Install the new solenoid.
- Tighten the nuts or bolts that hold the solenoid in place.
- Connect the wires to the solenoid.
- Reconnect the negative battery terminal.
5. Check the battery.
A weak or dead battery can prevent the solenoid from receiving power. Check the battery voltage with a voltmeter. The battery voltage should be at least 12.6 volts. If the battery voltage is too low, the battery should be charged or replaced.
6. Check the starter.
A faulty starter can prevent the solenoid from engaging. Check the starter by using a multimeter to measure the voltage at the starter terminal. The voltage should be at least 12 volts. If the voltage is too low, the starter may be faulty and should be replaced.
7. Check the ignition switch.
A faulty ignition switch can prevent the solenoid from receiving power. Check the ignition switch by using a multimeter to measure the voltage at the ignition switch terminal. The voltage should be at least 12 volts. If the voltage is too low, the ignition switch may be faulty and should be replaced.
8. Check the wiring harness.
A damaged or loose wiring harness can prevent the solenoid from receiving power. Inspect the wiring harness for any damage or loose connections. Repair or replace any damaged or loose wiring.
9. Check the fuses.
A blown fuse can prevent the solenoid from receiving power. Check the fuses in the fuse box for any blown fuses. Replace any blown fuses.
10. Solenoid Troubleshooting Table
| Symptom | Possible Cause | Solution |
|---|---|---|
| Solenoid does not click when the ignition key is turned. | Bad solenoid. | Replace the solenoid. |
| Solenoid clicks but the starter does not engage. | Faulty starter. | Replace the starter. |
| Solenoid clicks but the engine does not start. | Weak battery. | Charge or replace the battery. |
| Solenoid clicks but the engine cranks slowly. | Faulty starter. | Replace the starter. |
| Solenoid clicks but the engine cranks erratically. | Damaged wiring harness. | Repair or replace the wiring harness. |
How To Check Solenoid On John Deere Riding Mower
The solenoid on a John Deere riding mower is a small electrical component that is responsible for engaging the starter motor. If the solenoid is not working properly, the mower will not start. There are a few simple steps that you can follow to check the solenoid and determine if it is faulty.
- Disconnect the negative battery terminal. This will prevent any electrical shocks from occurring while you are working on the solenoid.
- Locate the solenoid. The solenoid is usually located on the starter motor. It is a small, cylindrical device with two terminals.
- Check the terminals for corrosion. If the terminals are corroded, they may need to be cleaned. Use a wire brush to remove any corrosion.
- Test the solenoid. To test the solenoid, you will need a multimeter. Set the multimeter to the ohms setting.
- Connect the multimeter probes to the solenoid terminals. The multimeter should read zero ohms if the solenoid is working properly.
- If the multimeter reads infinity ohms, the solenoid is faulty and will need to be replaced.
People Also Ask About How To Check Solenoid On John Deere Riding Mower
How do I know if my John Deere riding mower solenoid is bad?
There are a few signs that may indicate that your John Deere riding mower solenoid is bad. These signs include:
- The mower will not start.
- The mower starts but thenすぐに停止します。
- The mower starts but the engine does not run smoothly.
- The mower starts but the headlights or other electrical components do not work.
How much does it cost to replace a John Deere riding mower solenoid?
The cost to replace a John Deere riding mower solenoid will vary depending on the model of mower and the location of the solenoid. However, you can expect to pay between $20 and $100 for a new solenoid.
Can I replace the John Deere riding mower solenoid myself?
Yes, you can replace the John Deere riding mower solenoid yourself. However, it is important to have some basic electrical knowledge before attempting this repair. If you are not comfortable working with electrical components, it is best to have a qualified technician replace the solenoid for you.
