Spring has sprung, the sun is shining, and your lawn needs a good mow. But when you pull out your trusty lawn mower, you’re met with a horrifying sight: a rusted blade. That rusty, dull blade is not only going to give you a patchy, uneven cut, but it can also be dangerous. A rusty blade can break, sending sharp metal flying, or become unbalanced, causing vibrations and damage to your mower.
This article will guide you through the process of removing a rusted lawn mower blade safely and effectively. We’ll cover everything from identifying the type of blade you have to the proper techniques for removing and cleaning the rust. By the end, you’ll be equipped to handle this common lawn mower problem with confidence.
Why is My Lawn Mower Blade Rusted?
The main culprit behind rust on a lawn mower blade is exposure to moisture. This can happen due to:
- Leaving the mower outside: Rain, dew, and humidity can all cause rust to form.
- Storing the mower improperly: If the blade is not properly cleaned and dried after use, moisture can linger and lead to rust.
- Using the mower in damp conditions: Mowing wet grass or in humid environments can accelerate rust formation.
The Tools You’ll Need
Before you begin, gather the following tools:
- Work gloves: Protect your hands from sharp edges and rust.
- Safety glasses: Shield your eyes from flying debris.
- Wrench: This will be used to loosen the blade bolt. The size of the wrench will depend on your mower model.
- Hammer: For tapping the wrench if the blade bolt is particularly stubborn.
- Rust remover: There are several options available, from commercial rust removers to homemade solutions.
- Wire brush: For removing loose rust and debris.
- Cleaning cloth: For wiping down the blade after cleaning.
- Grease or lubricant: To help prevent future rust.
Step 1: Identify Your Lawn Mower Blade Type
Most lawn mower blades are one of two types:
- Standard blade: This is the most common type and is typically made of steel.
- Mulching blade: This blade has a special design that chops grass clippings into fine pieces, returning them to the lawn as fertilizer.
Knowing the type of blade you have is important because different types of blades may require different cleaning methods.
Step 2: Disconnect the Spark Plug
Before you start working on your lawn mower, always disconnect the spark plug to prevent accidental starts. This is a vital safety precaution that should never be skipped.
Important Note: Never work on a running mower! Always disconnect the spark plug before performing any maintenance.
Step 3: Remove the Blade Bolt
Locate the blade bolt, which is usually located in the center of the blade. Using the wrench, turn the blade bolt counter-clockwise to loosen it.
Tips for Removing a Stubborn Bolt:
- Apply penetrating oil: Spray penetrating oil onto the blade bolt and let it sit for a few minutes to help loosen it.
- Use a hammer: Gently tap the wrench with a hammer to help break loose the bolt.
- Consider using a breaker bar: If the bolt is extremely stubborn, a breaker bar can provide the extra leverage needed to loosen it.
Step 4: Remove the Blade
Once the blade bolt is fully loosened, carefully pull the blade off the mower deck. Take care to avoid getting your fingers pinched between the blade and the deck.
Step 5: Clean the Rust
Now that the blade is removed, it’s time to tackle the rust. Here are a few effective methods for cleaning rusty lawn mower blades:
1. Using a Wire Brush:
- Begin by scrubbing the blade with a wire brush to remove loose rust and debris.
- Be sure to work in a well-ventilated area as rust particles can be harmful if inhaled.
- For stubborn rust, you can use a wire brush with a coarse bristle.
- Once the loose rust is removed, you can move onto the next cleaning method.
2. Commercial Rust Remover:
- Follow the instructions on the product label. Most rust removers are applied to the rusted surface and allowed to sit for a set amount of time before being scrubbed off.
- Choose a rust remover that is suitable for metal surfaces.
- Protect yourself by wearing gloves and safety glasses while using a commercial rust remover.
3. Homemade Rust Remover:
- Vinegar: Vinegar is a natural rust remover. Soak the rusty blade in a vinegar bath for several hours, or overnight for heavily rusted blades.
- Baking soda: Create a paste by mixing baking soda with water. Apply the paste to the rusted areas and let it sit for several hours, then scrub with a brush.
- Lemon juice and salt: Combine lemon juice and salt to form a paste and apply it to the rusted areas. Let it sit for a few hours, then scrub with a brush.
Important Note: Always use caution when handling acids and chemicals. Wear protective gloves and glasses, and work in a well-ventilated area.
Step 6: Rinse and Dry
Once the rust has been removed, rinse the blade thoroughly with water to remove any residue from the cleaning process. Then, dry the blade completely with a clean cloth.
Step 7: Re-attach the Blade
Once the blade is clean and dry, re-attach it to the mower deck. Make sure the blade is properly aligned with the mower deck and that the blade bolt is tightened securely.
Step 8: Protect the Blade from Future Rust
To prevent rust from returning, apply a light coat of grease or lubricant to the blade after cleaning. This will help protect the metal surface from moisture and prevent rust from forming.
Tips for Preventing Rust
- Clean your lawn mower blade after each use. Remove any grass clippings and debris, then wipe the blade down with a dry cloth.
- Store your lawn mower in a dry place. A garage or shed is ideal. If you must store the mower outdoors, cover it with a tarp or waterproof cover.
- Consider applying a protective coating. There are rust-preventative coatings available that can be applied to lawn mower blades.
Conclusion:
Removing a rusted lawn mower blade is a simple task that can be completed with the right tools and a little bit of effort. By following the steps outlined in this guide, you can safely remove, clean, and re-attach your blade, ensuring a smooth and safe mowing experience. Remember to always prioritize safety by disconnecting the spark plug before working on your mower and wearing appropriate protective gear. By taking the time to properly care for your lawn mower blade, you can extend its lifespan and prevent future rust problems.
FAQ
Q1: What tools do I need to remove a rusty lawn mower blade?
You will need a few basic tools to remove a rusty lawn mower blade safely and effectively. These include a wrench that fits the blade bolt, a pair of work gloves for protection, and a lubricant like WD-40 to help loosen the bolt. If you’re dealing with particularly stubborn rust, you may also want to have a hammer and a chisel on hand.
Additionally, it’s important to ensure the lawnmower is disconnected from the power source before starting the process. This includes unplugging electric mowers and disconnecting the spark plug on gas-powered mowers. Always prioritize safety and follow the manufacturer’s instructions for your specific model.
Q2: How do I loosen a rusty bolt on a lawn mower blade?
Loosening a rusty bolt can be tricky, but with the right technique, you can avoid damaging the blade or bolt. Start by applying a liberal amount of lubricant like WD-40 to the bolt and let it soak for a few minutes. Then, use a wrench to try turning the bolt. If it doesn’t budge, try tapping the wrench handle with a hammer, but avoid hitting the bolt directly.
If the bolt is still stuck, you can use a chisel to create a small groove in the top of the bolt. Place the chisel on the groove and tap it with a hammer to loosen the bolt. If you’re struggling to remove the bolt, you might need to consult a professional.
Q3: What if the lawn mower blade is too rusty to remove?
If the blade is severely rusted and you can’t remove it using the above techniques, you might need to consider replacing it. A heavily rusted blade may be too damaged to sharpen effectively, and it could pose a safety hazard. Before attempting to remove a severely rusted blade, it’s best to consult with a professional mechanic who has experience handling these situations.
They can assess the damage and provide guidance on the best course of action, whether it’s attempting removal, replacing the blade, or seeking a more specialized solution.
Q4: How do I prevent rust on my lawn mower blade?
Preventing rust on your lawn mower blade is essential for maintaining its sharpness and extending its lifespan. After each use, clean the blade with a wire brush to remove any grass clippings or dirt that could trap moisture. Then, apply a thin layer of oil or lubricant to the blade to prevent rust from forming.
Another helpful tip is to store your lawnmower in a dry and well-ventilated area, ideally covered with a tarp. By following these simple preventive measures, you can significantly reduce the chances of your lawn mower blade rusting.
Q5: Can I sharpen a rusted lawn mower blade?
While it is possible to sharpen a rusty lawn mower blade, it’s often not recommended. Rust can weaken the metal and make it difficult to sharpen effectively. Additionally, a severely rusted blade may be too damaged to sharpen safely. If the rust is minimal, you can try using a file or sharpening stone to remove the rust and sharpen the blade.
However, if the rust is significant, it’s best to replace the blade altogether. A new blade will provide a cleaner cut and ensure optimal performance for your lawnmower.
Q6: What happens if I don’t remove a rusty lawn mower blade?
Leaving a rusty lawn mower blade unattended can lead to several problems. First, rust can spread and weaken the metal, potentially causing the blade to break during use. This could result in damage to your lawnmower or even injuries. Secondly, a rusted blade won’t cut grass effectively and could leave behind uneven patches.
Finally, a rusty blade can be unsightly and detract from the overall appearance of your lawnmower. For all these reasons, it’s crucial to remove and address a rusty lawn mower blade promptly.
Q7: What safety precautions should I take when removing a rusty lawn mower blade?
Safety should be your top priority when removing a rusty lawn mower blade. Always disconnect the power source of your lawnmower before starting the process. Wear work gloves to protect your hands from cuts and rust. Use caution when using tools like a hammer and chisel, as they can be dangerous if not handled properly.
If you are uncomfortable or inexperienced in working with tools, it’s best to consult a professional mechanic. They have the knowledge and experience to remove the rusted blade safely and effectively.