11 Common Gravely Mower Electrical Problems(With Solutions)

The electrical system comprises several components that work together to ensure proper functioning.

These components include the battery, ignition switch, wiring, safety switches, solenoid, fuses, relays, electrical components, voltage regulator, charging system, and grounding connections.

In this post, we will discuss common electrical issues that Gravely mower owners may encounter and provide troubleshooting solutions to resolve them.

Let’s dive in.

Gravely Mower Electrical Problems

1. Battery-related issues

One of the most common electrical problems with Gravely mowers is related to the battery.

Issues like a dead battery, insufficient charge, or faulty connections can prevent your mower from starting.

2. Faulty ignition switch

If you turn the ignition key but the engine fails to start, it might indicate a faulty ignition switch.

A malfunctioning switch can disrupt the electrical flow and prevent the mower from starting.

Read How Can I tell how old my Gravely Mower is(3 Easy Ways)

3. Wiring problems

Wiring problems can lead to a variety of electrical issues. Damaged or loose wires can cause intermittent connections, resulting in inconsistent mower performance or complete failure.

4. Malfunctioning safety switches

Gravely mowers have safety switches that prevent the engine from starting if certain conditions are not met, such as the mower deck being engaged or the operator not being seated properly.

Malfunctioning safety switches can hinder the starting process.

5. Problems with solenoid or starter

A faulty solenoid or starter can prevent the mower’s engine from cranking. If you hear a clicking sound when turning the key, it may indicate an issue with these components.

6. Faulty fuses or relays

Fuses and relays protect the electrical system from overloading or short circuits. If these components are defective, they can disrupt the electrical flow and cause various problems.

Read How to Lower Deck on Gravely Mower(Get a Perfect Cut)

7. Defective electrical components

Electrical components such as switches, sensors, or connectors can wear out or become damaged over time.

A defective component can disrupt the electrical circuit and affect the mower’s performance.

8. Voltage regulator issues

The voltage regulator ensures that the battery receives the correct charging voltage. If the regulator malfunctions, the battery may not charge properly, leading to electrical problems.

9. Charging system problems

A faulty charging system can result in a drained battery, even when the mower is running. This can occur due to issues with the alternator, wiring, or voltage regulator.

10. Electrical shorts

Electrical shorts occur when a wire’s insulation wears off or comes into contact with a metal surface. Shorts can cause fuses to blow or damage electrical components.

Read Lawn Mower Makes Grinding Noise When Trying to Start(Solved)

11. Grounding issues

Proper grounding is crucial for the electrical system’s stability. Poor grounding can lead to erratic electrical behavior, affecting the mower’s performance.

Fix Gravely Mower Electrical Problems

1. Checking the battery

Inspect the battery for corrosion, loose connections, or a low charge. Clean the terminals and ensure a secure connection.

2. Testing the ignition switch

Use a multimeter to test the ignition switch for continuity. If it fails to provide a consistent connection, consider replacing it.

3. Inspecting and repairing wiring

Carefully inspect the wiring harness for any signs of damage or loose connections. Repair or replace damaged wires and secure loose connections.

Read Where is the Serial Number on Ryobi Lawn Mower?

4. Verifying safety switch functionality

Test each safety switch to ensure it engages and disengages correctly. Clean or replace switches that are faulty.

5. Examining the solenoid and starter

Check the solenoid and starter for any signs of damage or wear. If necessary, replace these components.

6. Replacing fuses and relays

Identify and replace any blown fuses or faulty relays. Follow the manufacturer’s instructions and use appropriate replacements.

7. Repairing or replacing electrical components

Inspect switches, sensors, or connectors for damage. Replace any defective components to restore proper electrical function.

8. Testing the voltage regulator

Use a multimeter to measure the voltage regulator’s output. If it deviates significantly from the specified range, consider replacing it.

Read Riding Mower Making Noise When Blades Are Engaged(Fixed)

9. Ensuring proper charging system operation

Inspect the alternator, wiring, and voltage regulator to ensure they are functioning correctly. Repair or replace components as needed.

10. Locating and fixing electrical shorts

Carefully examine the wiring for any exposed or damaged areas. Insulate or replace the affected wires to eliminate shorts.

11. Checking the grounding connections

Inspect the grounding connections for corrosion or loose connections. Clean or tighten connections to ensure proper grounding.

Read Best Zero Turn Mower for 20 Acres(Top 7 Best )

Preventive Maintenance Tips

  • Regular cleaning and inspection: Clean the mower regularly and inspect the electrical components for signs of wear or damage.
  • Battery maintenance: Keep the battery terminals clean and free of corrosion. Check the battery’s charge regularly and replace it when necessary.
  • Lubrication of electrical connections: Apply dielectric grease to electrical connections to protect them from moisture and ensure proper conductivity.
  • Securing wiring and harnesses: Check the wiring and harnesses for secure connections and proper routing. Secure any loose or dangling wires.
  • Avoiding water exposure: Minimize exposing the electrical components to water or excessive moisture. Keep the mower stored in a dry location when not in use.

Read How to Charge Toro Electric Start Mower(In 5 Steps)

Gravely ZT50 electrical problem

Mower Not Starting 

If your Gravely ZT50 fails to start, the first thing to check is the battery. Ensure that it is fully charged and securely connected.

If the battery is in good condition, inspect the ignition switch for any signs of damage or loose connections.

A faulty ignition switch can prevent the mower from starting. Consider testing the ignition switch using a multimeter or consulting a professional for assistance.

Weak Battery or Battery Not Holding a Charge

If you’re experiencing issues with a weak battery or a battery that doesn’t hold a charge for long, it may be time to replace the battery.

Batteries have a limited lifespan, and over time, they can lose their capacity to hold a charge effectively.

Replace the battery with a new one that meets the specifications recommended by Gravely.

Faulty Solenoid or Starter

 A malfunctioning solenoid or starter can also prevent the mower from starting.

If you hear a clicking sound when turning the key, it could indicate a problem with these components.

Inspect the solenoid and starter for any visible damage or signs of wear. If necessary, replace the faulty component with a new one.

Read Spartan Mower Electric Fault Code(Crack all Error Codes)

Electrical Connections and Wiring

 Check all electrical connections and wiring in your Gravely ZT50 mower. Ensure that all connections are secure and free from corrosion.

Corroded or loose connections can disrupt the electrical flow and cause problems.

If you notice any damaged or frayed wiring, it’s important to repair or replace it to maintain proper electrical function.

Fuse and Relay Issues

The Gravely ZT50 mower is equipped with fuses and relays to protect the electrical system from overloading or short circuits.

If you’re experiencing electrical problems, it’s worth checking the fuses and relays. Look for any blown fuses or faulty relays and replace them with new ones if needed.

Safety Switches

Gravely mowers, including the ZT50, have safety switches that prevent the engine from starting if certain conditions are not met, such as the mower deck being engaged or the operator not being seated properly.

Malfunctioning safety switches can interfere with the starting process. Check the functionality of each safety switch and replace any faulty switches accordingly.

Read Can you mow Wet Grass with an Electric Mower(3 Reasons Not To)

Final Remarks

Gravely mowers are reliable machines, but electrical problems can arise over time.

By understanding common electrical issues and following the troubleshooting steps provided in this article, you can effectively address these problems and keep your Gravely mower in optimal working condition.

Remember to perform regular preventive maintenance to prevent future issues and ensure the longevity of your mower’s electrical system.


How often should I inspect the electrical system of my Gravely mower?

It is recommended to inspect the electrical system at least once a year or whenever you notice any performance issues.

Can I replace the battery myself?

Yes, you can replace the battery yourself. Ensure that you follow the manufacturer’s instructions and safety precautions.

Why does my mower’s engine not start even after replacing the ignition switch?

If the engine still does not start after replacing the ignition switch, check other electrical components like the starter, solenoid, or wiring for potential issues.

How do I identify a faulty solenoid or starter?

A clicking sound when turning the key without the engine cranking is often an indication of a faulty solenoid or starter. Consider testing or replacing these components.

Are electrical problems covered under warranty?

Warranty coverage varies, so it is best to refer to your Gravely mower’s warranty documentation or contact the manufacturer for specific details.

Read Zero Turn Mowers Under $2000(Top 10 Best)

George Bill
George Bill

George Bill is a Mechanical Engineer by Profession and an avid gardener and has been mowing his lawn for over 20 years. He has used a variety of different mowers during this time.
George is an expert at maintaining his mowers and over the years, he has learned many tricks and techniques for getting the best results from his mowers and is always happy to share his knowledge on this site.