The satisfying whir of a freshly-tuned lawnmower is a sound every homeowner looks forward to in the spring. But what about that rusty, pitted deck underneath? A rusted lawn mower deck doesn’t just look unsightly, it can hinder the performance of your mower, making it harder to cut grass evenly and potentially damaging your lawn. This article will guide you through the process of tackling rust on your lawn mower deck, from identifying the problem to applying effective solutions. Whether you’re a seasoned DIY enthusiast or just starting out, this comprehensive guide has you covered.
The Rust Problem:
Rust forms when iron, the main component of most lawn mower decks, reacts with oxygen and moisture. Over time, this reaction can lead to the formation of reddish-brown oxide, which can weaken the metal and eventually create holes. While there are different types of rust, the most common on lawn mower decks is “surface rust,” which is a shallow layer that often appears as a reddish-brown film. More serious forms like “pitting rust” can cause significant damage.
Identify the Rust: The First Step
Before you can start fixing the rust, you need to identify its extent and severity. A quick visual inspection is the best way to assess the situation.
Step 1: A Visual Check
- Surface rust: This appears as a reddish-brown coating on the surface of the deck. It’s usually easy to remove with basic cleaning methods.
- Pitting rust: This type of rust eats into the metal, forming pits and holes. It requires more serious attention, as it can weaken the deck’s structure.
Step 2: The Test
To determine if your deck is weakened by rust, perform a simple test:
- Use a screwdriver: Gently tap the deck with the screwdriver. If it sounds hollow or feels thin, there’s likely some pitting rust underneath.
- Check for holes: Look for any holes or gaps in the deck. This is a clear sign of advanced rust damage.
Getting Ready: Tools and Supplies
Once you’ve assessed the rust situation, gather the right tools and materials to tackle the job.
Essential Supplies:
- Safety gear: Wear safety glasses, gloves, and a respirator mask to protect yourself from dust and chemicals.
- Cleaning supplies: You’ll need a wire brush, sandpaper (various grits), and a degreaser to remove dirt and grime.
- Rust remover: This is essential for removing rust, especially from pitted areas. You can use commercially available rust removers or opt for natural alternatives like vinegar or lemon juice.
- Primer: This helps create a smooth surface for the paint and prevents future rust formation.
- Paint: Choose a high-quality, rust-resistant paint, preferably one specifically formulated for metal surfaces.
Time to Clean: Getting Rid of the Rust
Now that you’re equipped, it’s time to get your hands dirty! The first step is to thoroughly clean the deck to remove dirt, debris, and loose rust.
Step 1: Cleaning the Deck
- Disassemble: If possible, remove the deck from the mower. This will provide easier access for cleaning and painting.
- Degreasing: Apply a degreaser to the deck and let it sit for the time recommended on the product’s instructions. Use a scrub brush to remove stubborn grease and dirt.
- Rinse thoroughly: Use water to rinse away the degreaser and any remaining dirt.
Step 2: Removing the Rust
- Wire brushing: Use a wire brush to remove surface rust and loose particles. Pay extra attention to crevices and corners where rust might accumulate.
- Sanding: Sand the deck with sandpaper of varying grits, starting with coarse sandpaper to remove rust and then using finer grits to smooth the surface.
Step 3: Addressing Pitting Rust
- Rust remover: Apply a rust remover to pitted areas, following the instructions on the product’s label. Rust remover will convert the rust into a stable, non-reactive compound.
- Wire brushing and sanding: Once the remover has worked its magic, use a wire brush to remove the softened rust. Finish with sanding to create a smooth surface.
Repairing the Deck: Strengthening the Structure
If the rust has caused significant pitting or holes in the deck, you may need to repair the damaged areas to restore the structural integrity.
Step 1: Patching Holes
- Metal patch: Cut a piece of metal to match the size of the hole and use a metal bonding epoxy to attach it to the deck.
- Fiberglass cloth: For larger holes or uneven surfaces, use fiberglass cloth and resin to fill the gaps and create a smooth surface.
- Allow for drying: Let the epoxy or resin cure completely before moving on to the next step.
Step 2: Smoothing the Surface
- Sanding: After the repairs are dry, sand the patched areas smooth, blending them with the rest of the deck. Use sandpaper of varying grits to create a seamless finish.
The Final Touches: Priming and Painting
You’re almost done! With the rust removed and the deck repaired, it’s time to prime and paint to protect it from future rust formation.
Step 1: Applying Primer
- Clean the surface: Wipe down the deck with a damp cloth to remove any dust or debris.
- Apply primer: Choose a primer specifically formulated for metal surfaces. Apply it in thin, even coats, allowing each coat to dry completely before applying the next.
Step 2: Painting the Deck
- Choose a high-quality paint: Opt for a rust-resistant paint designed for metal surfaces. Consider using a spray paint for a smooth and even finish.
- Apply in thin coats: Apply the paint in thin, even coats, allowing each coat to dry completely before applying the next.
- Let it dry: Allow the paint to dry completely before reassembling the lawnmower.
Maintenance Tips: Preventing Future Rust
Once you’ve fixed the rust on your lawn mower deck, it’s crucial to implement preventative measures to stop it from coming back.
Step 1: Cleaning Regularly
- After each use: Wipe down the deck with a damp cloth to remove grass clippings and dirt.
- Annual cleaning: Give your mower a thorough cleaning at the end of the mowing season, removing any debris and applying a rust preventative solution.
Step 2: Store Properly
- Dry storage: Store your mower in a dry place, preferably indoors.
- Covering: Use a mower cover to protect it from the elements, especially if you’re storing it outdoors.
Conclusion: Keep Your Mower Rust-Free
Rust on your lawn mower deck might seem like a minor inconvenience, but it can quickly become a major problem if left untreated. By following the steps outlined in this article, you can effectively remove existing rust, prevent future rust formation, and keep your mower running smoothly for years to come. Remember, a well-maintained mower will not only cut your grass with ease but also enhance the beauty of your lawn, making your outdoor space a haven for relaxation and enjoyment.
Frequently Asked Questions
1. Why is my lawn mower deck rusting?
Rust forms when iron, the main component of steel, reacts with oxygen and water. Lawn mower decks are often exposed to these elements, leading to rust formation. Moisture from rain, sprinkler systems, or even dew can settle on the deck, providing the necessary conditions for rust to develop. Additionally, salt from road de-icing can accelerate rust formation.
Regular cleaning and maintenance play a crucial role in preventing rust. However, even with diligent efforts, rust can still form over time, especially in areas exposed to harsh weather conditions or frequent use.
2. How do I know if my lawn mower deck is rusting?
Look for signs of rust on the underside of your lawn mower deck. These include reddish-brown spots, pitting, and flaking paint. Additionally, listen for any unusual rattling noises from the deck, which could be an indication of rust damage. Inspect the deck closely for any signs of corrosion, as it can spread quickly if left untreated.
3. Can I just paint over the rust?
While painting over rust can temporarily cover it up, it’s not a permanent solution. Rust continues to form underneath the paint, potentially leading to further damage to the deck. Before painting, it’s essential to remove the existing rust and properly prepare the surface.
4. What’s the best way to remove rust from a lawn mower deck?
For mild rust, you can use a wire brush or a sanding block to remove it. For more severe rust, use a chemical rust remover, available at most hardware stores. Follow the instructions on the product carefully. Remember to wear protective gear, including gloves and eye protection, when working with rust removers.
5. Can I use a power washer to remove rust?
While a power washer can be useful for cleaning the deck, it’s not recommended for removing rust. The high pressure of a power washer can actually embed rust particles deeper into the metal, making it harder to remove. Stick to manual methods or chemical treatments for rust removal.
6. How do I prevent rust from forming in the future?
Regular cleaning and maintenance are key to preventing rust. After each use, wipe down the deck with a damp cloth to remove grass clippings and debris. Apply a coat of automotive wax or rust-resistant paint to the deck, providing a protective barrier against moisture and oxygen. Storing your lawnmower in a dry place, ideally indoors, can also help prevent rust formation.
7. How often should I check my lawn mower deck for rust?
It’s advisable to inspect your lawn mower deck for rust at least once a month, especially during the rainy season or when the mower is stored outdoors. Regularly checking the deck allows you to catch rust early and address it before it becomes a major problem.