How to Diagnose and Test a Faulty Solenoid on Your Lawn Mower

To test a solenoid on a lawn mower, you can use a multimeter and follow a few steps. First, disconnect the battery and wiring harness from the solenoid.

Then, set the multimeter to the ohms setting and check the resistance between the two terminals of the solenoid. If the reading falls outside the expected range, the solenoid may be faulty. A solenoid is an electrical component that is critical to the proper functioning of a lawn mower. It is responsible for the activation of the starter motor and the engagement of the cutting blades. However, over time, solenoids can wear out or become damaged, leading to issues with starting or operation. In this article, we will explore how to test a solenoid on a lawn mower using a multimeter. By following a few simple steps, you can quickly determine if the solenoid is functioning correctly and troubleshoot any problems.

How to Diagnose and Test a Faulty Solenoid on Your Lawn Mower


Understanding The Solenoid In A Lawn Mower

A solenoid is an essential component in a lawn mower that regulates the electrical flow between the batteries, starter and the engine. It resembles a small cylinder having two copper wires connected to it. The solenoid’s primary function is to receive and transfer the electrical current from the battery to the starter.

In simpler terms, the solenoid is responsible for starting and stopping the engine. When the key is turned to start the lawn mower, the solenoid is activated and allows current to flow to the starter. To test a solenoid, you will need a multi-meter tool to measure the electrical current.

Testing a solenoid is crucial to ensure that the electrical components of your lawn mower are functioning adequately.

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How To Identify If The Solenoid Is Faulty

To determine if your lawn mower’s solenoid is faulty, you should look out for common signs such as a clicking noise without the engine cranking, the engine cranking but not starting, or no response when you turn the key. If you suspect that the solenoid is defective, you can test it using a multimeter to check if there is continuity between the two terminals.

First, disconnect the battery and wires from the solenoid, and then test the resistance of the solenoid’s connection with the multimeter. If the readings are not within the range specified by the manufacturer, then the solenoid is faulty and needs to be replaced.

Always remember to wear protective gear and follow safety precautions while performing any lawn mower repair or maintenance task.

How to test a lawn mower solenoid

Required Tools For Testing A Solenoid

To test a solenoid on a lawn mower, you will need a few essential tools. Firstly, get a multimeter with a continuity testing feature, which will help you identify the solenoid’s condition. Next, ensure you have an adjustable wrench to loosen and tighten the battery cables.

Additionally, you will need a screwdriver to remove the solenoid from the mower for further inspection. You may also require a battery voltage tester to check the voltage level on your battery. Finally, a safety pair of gloves is necessary to protect from any accidental sparks.

These tools are vital to perform an accurate test on your lawn mower’s solenoid.

Step-By-Step Guide To Testing A Solenoid

Before performing any maintenance on your lawn mower, make sure to follow proper safety precautions. Once you have ensured your safety, locate the solenoid, typically found near the battery. Check the connections of the solenoid and ensure they are secure and not corroded.

Using a multimeter, test the voltage of the solenoid to determine if it is functioning properly. Interpret the multimeter readings to determine if the solenoid needs to be replaced. If replacing, disconnect the old solenoid and install the new one properly.

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Following these steps will ensure your lawn mower solenoid is functioning properly and your mower is in good working condition.

Regular Maintenance Schedule For The Solenoid

Maintaining the solenoid in your lawn mower is an important part of regular maintenance. First, disconnect the battery and remove the solenoid cover. Inspect the components for any damage or wear. Next, use a multimeter to check for continuity and voltage.

If necessary, replace any faulty components. Clean the solenoid and reassemble, making sure all connections are tight. Finally, test the solenoid by reconnecting the battery and starting the mower. Follow these simple steps to ensure your lawn mower continues to run smoothly with a well-maintained solenoid.


As you can see, testing a solenoid on a lawn mower is not a difficult task. Following the simple steps outlined in this post can save you time, money and frustration. Remember to always prioritize your safety first and foremost by disconnecting the battery before you begin testing the solenoid.

If the solenoid is faulty, it’s important to replace it to prevent further damage to your lawn mower and ensure it operates at peak performance. By regularly testing and maintaining your lawn mower’s solenoid, you can prolong the life of your machine and avoid costly repairs down the road.

Don’t neglect this important component and keep your lawn mower running smoothly season after season.