Skip to Content

Toro Mower Keeps Blowing Fuses – Why And What To Do?

The fuses in your Toro mower help protect you as well as the equipment. However, if fuses in your mower keep blowing, what could be the problem and what should you do? We researched this topic to provide you with in-depth information that can help you solve your issue.

The most common cause for a fuse blowing in a lawn mower is a short circuit. To find out what is causing the short, you can troubleshoot by inspecting:

  • The ignition wiring system 
  • Power take-off system

Depending on the source of the problem, you may need to replace a faulty ignition switch or any faulty wires.

Keep reading as we delve into how to troubleshoot the causes of the short circuit. Included are solutions to fix the shorting problems. We have also provided tips on maintaining your mower to last longer, and the cost of repairs. 

A Toro riding lawn mower used for a golf cart, Toro Mower Keeps Blowing Fuses - Why And What To Do?

Why Are The Fuses In Your Toro Mower Always Blowing Fuses?

It can be frustrating when you are busy trimming your lawn with a Toro riding mower, only for it to stop moving. The most common reason for this is a blown fuse due to a short circuit. 

This can occur due to a damaged wire or a part that has malfunctioned. As a result, the current flows to the metal frame of your mower through a path it’s not supposed to.

This causes a spike in the current, which then causes the fuse to blow. This immediately stops the current from flowing, preventing damage to the wires and any potential fire. 

To solve your problem, you’ll need to find out which wires are damaged and the component causing the short circuit. 

Mowing a tall grass lawn

Begin by pulling out your manual that has two diagrams. One shows you the wiring of your mower, and the other the parts of your mower.

The following are the circuit systems of your mower that you need to check:

The Ignition Wiring System

This is the first section you need to check. Turn off the ignition to stop the electrical current from flowing. Next, position the multi-meter to read the DC or direct voltage of the fuse holder. 

Remove the fuse. Fit one probe into one side of the holder and the other one on the side facing the first probe. If there is no voltage, then go ahead and turn on the ignition.

If the multi-meter shows there is a voltage while it's running, then there is a short in the wire between the ignition switch and the fuse holder. It is normally red in color and will need to be replaced. 

Alternatively, the short circuit could have happened in the ignition switch itself. To find out if this is true, disconnect the switch and measure the voltage once more. If the multi-meter indicates there is no voltage, the short is here. Therefore, you will need to replace the ignition switch like the one shown below.

Check out this ignition switch on Amazon for a Toro lawn mower.

The video below explains in detail how to troubleshoot after a short-circuit occurs, starting with the wiring in the ignition switch:

Power Take-Off System

The PTO or Power Take-Off switch is responsible for raising and lowering the mower deck. If you are unable to lower the deck after turning on the switch, then you can’t cut your grass. This means there is a problem with the PTO switch.

First, check the wiring, and if you find nothing wrong, then the PTO switch has malfunctioned. It will need to be replaced. 

You can find this Toro-compatible PTO switch on Amazon.

How To Fix The Problem Causing The Fuses In Your Mower To Blow

After discovering what caused the fuses in your mower to blow, the next step is to solve the problems. Let's find out how to solve the problems mentioned above:

Replace Damaged Wire

Some of the ways of identifying a damaged wire is by checking for cracks and corrosion. Also check if they are pinched or they look different from a normal wire. Such a wire needs replacement.

If you have a walk-behind mower, check out the video below that demonstrates how to replace a traction cable:

Replace The Ignition Switch 

If the ignition in your riding mower is faulty, you need to replace it. It’s fairly easy to replace the switch and will take you around 15 minutes to complete the job.

Before you begin, you will need a wrench set, a pair of work gloves, and a new ignition switch. The steps to follow are:

Disconnect Cable From Battery 

Switch off the ignition and remove the key. According to the manual, identify where the battery is located, which is normally under the seat. Disconnect the negative cable from the battery. Tuck it safely away so that it does not touch any battery post.

Using a red toro lawn mower

Install the New Ignition Switch

Lift the hood, and underneath you will see locking tabs on the ignition switch. Press these tabs to release the ignition switch and push it outwards. Detach the wire harness that is at the back of the faulty ignition switch. Afterward, connect the wire harness to the back of the new ignition switch.  

Push the ignition switch back into its normal position. Lock back the tabs, and lower the hood. Re-attach the cable to the negative terminal of the battery. Lower the seat, and you are ready to use your mower again. 

Check out the video below that shows you how to replace the ignition switch of a riding lawn mower:

Replace The PTO Switch

It’s very simple to replace the PTO switch. Begin by checking the part number to get the correct one. Squeeze the switch inwards and pull it out. Apply dialect grease on the metal terminals of the new PTO switch and plug it in. Push it inwards to secure it.

Check out the video below that describes how to replace the PTO switch:

How To Maintain Your Lawn Mower To Last Longer

After learning how to solve issues emanating from blown fuses, it would be great to know how to take care of your lawn mower. That way it will serve you longer while helping you to perfectly trim your lawn.

Your Toro mower can last between 10 and 15 years. However, you can extend its lifespan to 20 years by following the tips below:

Change Oil Regularly

Manufacturers recommend that you change the oil after every 50 hours of usage. But, regularly check the oil and change it if its quality has gone down. You can know this after the color changes, which will look different from the original color.

Also, remember to replace with the correct oil, ensuring to maintain the required levels. 

Use Your Mower Regularly

This may sound absurd, but yes, you do need to use your mower often. This helps to keep the fluids and cylinders running perfectly, and prevents lowering the quality of the oil in the carburetor.

Sharpen The Blades

Check out these blades on Amazon that you can use on your Toro Mower. 

For a clean trim, the blades need to be sharp. Sharpen them at least every 30 and 40 hours of use, or at least once in each new season. 

Take Care Of The Battery

A well-maintained battery will increase the longevity of your mower. Check the water levels after 10 hours of use.

Don't forget to remove the battery from your mower in winter and store it safely. During this time, charge your battery to keep it in good condition.

Cost Of Repairs

Gardener using a high powered Toro lawn mower in his lawn

Repairs on a walk-behind lawn mower start from $40. If you have it fixed at your home, you will pay a minimum fee of $36. The cost of repairing a riding lawn mower starts from $140, but if you call a technician to fix it from your home, the charges are around $72.

A technician can charge you from $45 to $100 per hour, depending on the complexity of the job, and the cost of the parts. The location where you have your mower repaired could either increase or decrease the cost of repairs.

It is without a doubt that if you decide to handle the repairs yourself, you can significantly reduce the costs. However, if you are not confident with any of the processes, it's best to hire a technician. You will pay more, but you will be less likely to hurt yourself or your mower. 

In Closing

A Toro riding lawn mower used for a golf cart

Fuses that keep blowing can be very frustrating. It will not only halt your progress as you mow, but it also takes money to replace those fuses and repair the mower. Because of this, it is a good idea to learn how to solve issues that arise due to blown fuses.

In addition, learning how to troubleshoot and care for your mower can help increase its lifespan. It's a great way to reduce your expenses as you continue enjoying your beautiful lawn.

Learn more about Toro lawn mowers from our previous posts:

Toro Lawn Mower Bag Not Filling

Gas Coming Out Of My Lawn Mower Exhaust – What's Wrong?