Seven Common Causes of a Non-Starting Toro Lawnmower

Your mower should be starting now, but nothing happens. Not even turning over or cranking is possible. Before you can resume mowing the lawn when this happens, you need to look into a few things.

A Toro lawn mower may be difficult to start for a variety of reasons, including issues with the starter solenoid or starter motor, battery, wires, cables, and connections, fuse, safety switch or ignition switch, or any one of these.

When working with electricity, take care to prevent getting wounded or electrocuted. You should see a qualified technician for guidance if you are unclear of how to carry out any repairs in a safe manner.

Lawn Mower
Lawn Mower

Before diagnosing, repairing, or operating, make sure you have read and understood all relevant safety information found in the equipment’s operator’s manual. If you don’t feel confident in your abilities or lack the necessary knowledge to make the repair safely, you should get some help from a professional.

The Reason The Toro Lawnmower You Own Won’t Start

Your Toro Lawn Mower’s Battery is Dead or Faulty.

First, make sure the battery is good if the Toro won’t start. The problem could be a dead or undercharged battery.

A 12-volt battery that has been fully charged should measure around 12.7 volts when you check its voltage. The battery has to be charged if the reading is lower than it should be.

To check the battery, according to the instructions in “5 Things That Are Draining the Life of Your Lawn Mower Battery.” You can lessen the likelihood of battery failure in the future by avoiding the items listed here that are known to drain batteries.

Connect your Toro lawn mower to a battery charger to recharge the battery. Please put on safety gear before continuing to protect your eyes and skin from potential electrical shock. Here’s how to charge the battery in your lawnmower:

  • Get at the terminals and battery. A screwdriver may be required to access the battery. Don’t take the battery out of its case.
  • The positive cable should be connected first when charging. The plus sign cable, or the red cable, is this one. Connect the cable to the battery’s positive pole.
  • The negative end of the cable should be connected to the battery’s negative terminal. This is the negative-sign cable, also known as the black cable.
  • To avoid electrocution, avoid touching anything that isn’t covered in rubber.
  • Adjust the charger’s voltage and current to meet your needs. Lawn mower batteries typically have a voltage of 12 volts. An increased current charges the battery more quickly. The recommended starting point is 2 amps, with a maximum of 10 amps. It’s best to charge slowly.

A new battery must be installed if the old one can’t maintain a charge. A replacement battery can be purchased from any Toro dealer, hardware store, or auto parts store in your area.

Do not leave home without your current battery. If you buy a new battery from a store without giving them your old one, you will likely be charged a battery core fee.

Corroded or loosened Toro lawn mower connectors and wiring

Since your Toro mower shakes and vibrates while in use, it poses a risk to the electrical wires and connections. Corrosion of the connections and terminals can occur due to both loose wiring and moisture.

Because of a lack of continuity, your Toro might not start due to a few loose or corrosion electrical components.

Make sure all of the plugs are firmly in place by checking them. Use a baking soda solution to get rid of any corrosion you find (2 cups water to 3 heaping tablespoons of baking soda). Tighten up all of the wires and plugs.

Put in new parts if you find any corroded or broken wires, terminals, or connections.

Bad Fuse on Your Toro Lawn Mower

Except for a few manual pull-start versions, all Toro lawn mowers have fuses. The electrical system of the mower is shielded by the fuse.

For blown fuses, look. If you’re unsure whether you have a blown fuse, you can test resistance by placing a voltmeter probe on each of the fuse’s prongs. Your fuse is in good shape if the resistance reading is close to 0. A faulty fuse is indicated by a resistance value of infinity.

Replace a blown fuse with one that has the same amperage as the new fuse. Bring your lawn mower to your neighborhood Toro mower dealership or lawn mower repair shop to investigate the issue if you keep blowing fuses.

Your Toro Lawnmower’s Ignition Switch Is Bad.

If nothing happens when you turn the key in the ignition, it could be the switch. A keyed switch may have been replaced by a toggle switch in your model. Your Toro won’t start if the switch is faulty.

If the ignition switch is suspect, try testing its continuity with a multimeter. The “B” and “S” prongs on the battery and starter solenoid are where you should connect them.

Put the key in and turn it until you hear a click (or flip the toggle switch to the start position). Connect one probe to the B prong and the other probe to the S prong of the multimeter while the multimeter is in the resistance measurement mode.

The resistance of a high-quality key switch for the ignition should be close to zero. If the resistance reading on your ignition key switch is infinite, you need to replace it.

Your Toro Lawnmower’s Faulty Safety Switch

To ensure your safety, Toro has installed an operator presence control system on your mower. When certain conditions are met, such as when the brake is engaged, the mower will not start because of these safety switches.

Your Toro might not start because of a faulty safety switch. Use a multimeter to make sure your switch works. To troubleshoot, you can also temporarily disable the safety switch to see if the switch is faulty.

Always use the safety switch before starting the mower.

Do not operate a mower with the safety switch removed. You never know when you might need a safety switch, but having one is a good idea anyway.

Your Toro Lawn Mower’s Starter Solenoid Is Broken.

An electromagnetic switch, a starter solenoid activates your Toro’s starter motor, allowing you to start the engine.

When the starter solenoid’s spring becomes too weak or the copper plate corrodes, the device stops working properly. The solenoid may fail if the starter is weak, the battery is weak, or the ground is poor.

To ensure a successful starter solenoid test, always ensure your battery is fully charged. Carry on testing the solenoid with the methods detailed in How to Tell Your Lawn Mower Solenoid is Bad to confirm the diagnosis.

Your Toro Lawnmower’s Starter Motor Is Bad.

The starter should be checked after you have determined that the battery, cables, wiring, ground, and starter solenoid are not the problem. To ensure the starter is working properly, it can be taken out and tested.

Instead of just buying a new starter for your Toro mower, I would have it tested and possibly rebuilt by a local repair shop that specializes in starter and alternator repairs.

Is Your Toro Mower Still Giving You Trouble?

Owning a lawnmower that never breaks down would be fantastic, but that almost never happens. Over time, you’ll experience issues with any mower you own.

Here I have compiled a list of the most commonly occurring issues with Toro mowers, along with their potential causes and suggested solutions. Check out the Common Issues with Toro Lawn Mowers and How to Fix Them for more information.