What Happens When a Lawn Mower Gets Wet?

The sun is shining, the birds are singing, and you’re finally ready to tackle your overgrown lawn. You grab your trusty lawn mower, fire it up, and… oh no! A sudden downpour catches you off guard, soaking your machine in a flash. Now you’re left wondering: what exactly happens when a lawn mower gets wet? This article will explore the potential consequences of water exposure on your lawn mower, from minor inconveniences to serious damage, and offer tips on how to handle this common scenario.

In short, water and lawn mowers are not the best of friends. While a little splash might not be a big deal, prolonged exposure can lead to a variety of problems, from rust and corrosion to electrical malfunctions and engine troubles. This article will delve into the specific issues you might encounter, the severity of those issues, and what you can do to prevent or mitigate them.

The Potential Problems of Water and Lawn Mowers

Water can wreak havoc on your lawn mower, affecting various components. Here’s a breakdown of the most common problems you might face:

1. Rust and Corrosion

This is perhaps the most immediate and obvious consequence of water exposure. Iron components in your lawn mower, like the engine block, chassis, blades, and even screws, are susceptible to rust. Rust is a form of corrosion that occurs when iron reacts with oxygen and water. This process weakens the metal, making it more prone to cracking and failure.

Understanding Rust and its Impact

Rust isn’t just a cosmetic issue; it can significantly impact your lawn mower’s performance and longevity. Here’s how:

Reduced Performance: Rust can build up on moving parts, creating friction and hindering smooth operation. This can lead to sluggish engine performance, blade dullness, and reduced cutting efficiency.

Increased Wear and Tear: Rusty components experience increased wear and tear, leading to premature failure. You may find yourself replacing parts more often.
Safety Concerns: Severely rusted parts can weaken and become prone to breakage, posing a safety hazard during operation.

Preventing Rust

Dry Off Immediately: The first line of defense against rust is to dry your lawn mower thoroughly after any water exposure. Use a dry cloth to wipe down all surfaces, including under the engine cover and around the blades.

Proper Storage: Store your lawn mower in a dry, well-ventilated place. Consider using a tarp or cover to shield it from moisture and dust.
Regular Maintenance: Keep your lawn mower clean and well-maintained. Regularly inspect for signs of rust and apply a light coat of oil or rust preventative to protect metal components.

2. Electrical Issues

Water and electricity are a dangerous combination, and your lawn mower is no exception. Electrical components, like wires, spark plugs, and the ignition system, are vulnerable to water damage.

Understanding the Risks

Short Circuits: Water can cause a short circuit, disrupting the flow of electricity and potentially damaging sensitive electrical components.
Corrosion: Water can corrode electrical terminals and wires, leading to poor connections and electrical failures.
Safety Hazard: Electrical malfunctions can pose a serious safety risk, potentially causing shocks or even fires.

Minimizing Electrical Risk

Avoid Water Immersion: Do your best to keep water away from your lawn mower’s electrical components. If your mower gets soaked, disconnect it from the power source immediately.
Dry Thoroughly: Carefully dry all electrical components, including the ignition system, spark plugs, and wiring. You can use a hairdryer on a low setting or let it air dry completely.
Professional Inspection: If you suspect water damage to your lawn mower’s electrical system, it’s best to have it inspected by a qualified technician.

3. Engine Problems

Water can infiltrate the engine compartment and cause problems with the fuel system, ignition system, and internal engine parts.

The Engine’s Vulnerability

Fuel System: Water can contaminate fuel, causing it to become stale or even unusable. It can also clog fuel lines and filters.
Ignition System: Water can damage spark plugs, ignition coils, and other electrical components within the ignition system, leading to misfires and engine starting issues.

Internal Components: Water can enter the engine cylinders, causing rust and corrosion on internal components. This can lead to reduced engine performance, excessive wear, and even engine failure.

Protecting Your Engine

Avoid Water Contact: Keep your lawn mower out of the rain and standing water. If you must use it during light rain, avoid deep puddles and high-pressure water spray.
Fuel Management: Use fresh fuel, store it properly, and avoid leaving it in the tank for extended periods.

Regular Maintenance: Regularly inspect the fuel system, spark plugs, and air filter for signs of damage or contamination.

4. Damage to the Cutting Deck and Blades

Water can also damage the cutting deck and blades, impacting their performance and safety.

The Impact of Water on the Cutting Deck

Corrosion: Water can cause rust and corrosion on the cutting deck, leading to its deterioration and eventual failure.

Blade Damage: Water can dull the blades, reducing their sharpness and cutting efficiency. It can also cause rust to form on the blades, which can affect their balance and create a safety hazard.

Protecting the Cutting Deck

Wipe It Down: Always dry the cutting deck thoroughly after use, particularly if it has come into contact with water.
Blade Maintenance: Sharpen the blades regularly and inspect them for signs of rust or damage.

What to Do if Your Lawn Mower Gets Wet

If your lawn mower gets caught in the rain, there are steps you can take to mitigate damage and prevent further problems:

Disconnect the Power Source: Immediately disconnect the lawn mower from the power source (for electric mowers) or turn off the fuel supply (for gas mowers).
Dry the Exterior: Use a dry cloth or towel to wipe down the entire exterior of the lawn mower, including the engine cover, cutting deck, and wheels.

Check for Water Intrusion: Carefully inspect the engine compartment, the fuel tank, and the air filter for signs of water intrusion.
Remove the Spark Plugs: Remove the spark plugs and let them dry completely. This allows any water that may have entered the cylinders to evaporate.
Let It Air Dry: Leave the lawn mower in a dry, well-ventilated area to allow it to air dry completely. Avoid using a hairdryer, as the heat could damage sensitive components.

Start it Up: Once the lawn mower is completely dry, try starting it up. If it starts and runs smoothly, you can likely continue using it.
Professional Inspection: If you encounter any problems starting the lawn mower or if it doesn’t seem to be running properly, it’s best to have it inspected by a qualified technician.

Preventing Water Damage to Your Lawn Mower

The best way to avoid the consequences of water exposure is to take preventative measures:

Store Properly: Store your lawn mower in a dry, well-ventilated place. If you don’t have a garage, consider using a tarp or cover to shield it from rain.
Use a Mower Cover: Invest in a waterproof mower cover to protect your lawn mower from rain and other elements.
Avoid Water Contact: Try to avoid using your lawn mower in the rain or when the ground is wet. If you must use it during light rain, try to avoid deep puddles and high-pressure water spray.

Regular Maintenance: Regularly clean and maintain your lawn mower to prevent the build-up of dirt, debris, and moisture that can lead to rust and corrosion.

Conclusion:

While a little splash of water might not pose a major threat, prolonged exposure can cause serious damage to your lawn mower. By understanding the potential problems, taking preventative measures, and acting quickly in case of water exposure, you can significantly extend the life of your lawn mower and ensure a smooth and safe mowing experience. Remember, a dry lawn mower is a happy lawn mower!

FAQ

1. What Happens When My Gas Mower Gets Wet?

Getting your gas mower wet is never good. Water can damage the engine, causing it to run poorly or not at all. It can also lead to corrosion and rusting of metal parts. If your mower gets wet, it’s important to dry it off as soon as possible and make sure all parts are thoroughly dried before starting it again. If the engine won’t start, you may need to have it inspected by a mechanic.

To prevent water damage, it’s best to avoid mowing in the rain. If you do have to mow in wet conditions, try to avoid getting the mower too wet. Be sure to check your mower for any signs of moisture after use and dry it off completely.

2. Will Water Damage My Electric Mower?

While not as susceptible to damage as gas mowers, water can still be detrimental to electric mowers. Water can short circuit the electrical components, causing them to malfunction or fail. It’s best to avoid mowing in the rain or on wet grass with an electric mower. If you must use it in wet conditions, be careful not to submerge the mower in water and dry it off thoroughly after use.

If you suspect your electric mower has been exposed to water, it’s best to disconnect it from the power source and allow it to dry completely. If it doesn’t seem to be working properly, you should have it inspected by a qualified technician.

3. Can I Use a Wet Lawn Mower?

Using a wet lawn mower can be dangerous and can lead to damage. The engine may sputter, backfire, or stall due to the presence of water. This could cause the mower to operate erratically or even stop working completely. The wet engine can also create problems with starting and running smoothly.

For safety and longevity, it’s best to wait for the grass and mower to dry completely before mowing. It’s also essential to ensure the engine is properly cooled and has dried completely before storing it to prevent rust and corrosion.

4. What Should I Do If My Lawn Mower Gets Wet?

If your lawn mower gets wet, the first step is to turn it off immediately. Then, remove the spark plug wire to prevent accidental starting. Remove any visible water from the mower, particularly from the engine compartment and around the spark plug. If you have a gas mower, check the air filter for water and replace it if necessary.

Allow the mower to dry completely before restarting it. If it’s a gas mower, make sure the fuel is fresh and the carburetor is free from any water or moisture.

5. How Do I Prevent My Lawn Mower from Getting Wet?

To protect your mower from water damage, avoid mowing in the rain or when the grass is wet. Store the mower in a dry, well-ventilated area. When not in use, ensure the mower is covered with a waterproof cover to protect it from dust, moisture, and the elements.

Regular maintenance and cleaning can also help to prevent rust and corrosion. Clean the mower after each use, removing any dirt or debris that may trap moisture. If you’re not using the mower for an extended period, consider adding a rust inhibitor to the engine and other metal parts.

6. Can Water Damage My Lawn Mower’s Engine?

Water can definitely damage your lawn mower’s engine. It can cause a number of problems, including:

Corrosion: Water can cause rust and corrosion of the engine’s metal parts. This can lead to seizing, reduced performance, and eventually engine failure.
Short Circuits: Water can short circuit the electrical components in the engine, causing them to malfunction or fail.

Fuel Contamination: Water can contaminate the fuel, leading to engine problems.

It’s important to take steps to prevent water from entering the engine compartment and to dry it off thoroughly if it does get wet.

7. How Can I Tell If My Lawn Mower Has Water Damage?

There are a few signs that may indicate your lawn mower has water damage. Look for:

Difficulty Starting: If your mower is having trouble starting or starting erratically, it may have water damage.
Engine Running Rough: A rough-running engine, especially after the mower has been wet, could be due to water in the engine or fuel system.
Smell of Gas: If you detect a strong smell of gasoline or a burning smell, this may indicate a fuel line leak caused by water contamination.

Rust or Corrosion: Look for any signs of rust or corrosion on the engine, exhaust, or other metal parts.

If you notice any of these signs, it’s best to take your lawn mower to a qualified mechanic to have it inspected.