Maintaining a sharp lawn mower blade is crucial for a healthy and well-maintained lawn. Dull blades tear grass, leaving it brown and unsightly. Fortunately, changing mower blades is a relatively straightforward task. However, lifting the mower can be tricky, especially for heavier models. This article will guide you through the process of safely and effectively lifting your lawn mower to change blades. We’ll discuss the necessary tools, safety precautions, and step-by-step instructions to ensure a smooth and successful blade change.
Changing a lawn mower blade is a simple maintenance task that can be done by most homeowners. The first step is to ensure the mower is disconnected from the power source (either electricity or gas) and that the spark plug wire is disconnected. The blade must then be removed and replaced with a new, sharp blade. The process involves lifting the mower in order to access the blade, which can be a challenge depending on the weight and design of the mower. This article will walk you through the process of safely lifting a lawn mower and changing the blade.
Assessing Your Mower and Gather the Necessary Tools
Before you begin, it’s important to take a moment to assess your lawn mower. Different models have varying lift points and weight distributions. Consider the following:
- Mower type: Is it a push mower, self-propelled, riding mower, or robotic mower? Each type has its unique lifting requirements.
- Mower weight: Heavier mowers will require more effort to lift.
- Mower design: Look for designated lift points or handles. Some mowers have built-in mechanisms for lifting.
Once you’ve assessed your mower, gather the following tools:
- Wrench: A wrench specifically designed for your mower blade is essential.
- Gloves: Wear gloves to protect your hands from sharp blades and dirt.
- Safety glasses: Protect your eyes from flying debris.
- Work surface: Have a stable, flat surface to work on, like a workbench or a piece of plywood.
Safely Lifting Your Lawn Mower
Lifting a lawn mower requires proper technique and caution to prevent injury. Follow these steps:
1. Prepare the Mower
- Disconnect the spark plug wire to prevent accidental starting.
- Place the mower on a flat, stable surface.
- If your mower has a deck washout port, use a garden hose to flush out any debris.
2. Locate the Lift Points
- Push mowers: Many push mowers have built-in handles for lifting.
- Self-propelled mowers: Locate the lift points under the deck, often near the wheels.
- Riding mowers: Refer to your owner’s manual for lift points. These are typically located on the frame, under the deck.
3. Engage Lifting Assistance
- Get help: If your mower is heavy, get another person to assist you.
- Use a jack: If your mower has designated jack points, a jack can be useful.
- Leverage tools: A long piece of lumber or a pry bar can be used as a lever to lift the mower.
4. Lift Carefully
- Maintain a firm grip: Use both hands and keep your back straight.
- Lift with your legs: Use your leg muscles to lift, not your back.
- Lift gradually: Don’t try to lift the mower quickly.
5. Stabilize the Mower
- Use blocks or jack stands: Once lifted, use blocks or jack stands to secure the mower.
- Ensure stability: Ensure the mower is balanced and won’t tip over.
Replacing Your Lawn Mower Blade
Now that you’ve safely lifted your mower, you’re ready to change the blades:
1. Remove the Blade
- Locate the blade bolt: This is usually a large, hexagonal bolt in the center of the blade.
- Use the wrench: Hold the blade firmly and use the wrench to loosen the bolt.
- Remove the blade: Once the bolt is removed, gently pull the blade off the spindle.
2. Install the New Blade
- Inspect the spindle: Make sure the spindle is clean and free of damage.
- Align the blade: Place the new blade over the spindle, ensuring the blade is positioned correctly.
- Tighten the bolt: Use the wrench to tighten the blade bolt securely.
3. Lower the Mower
- Remove the support: Gently lower the mower back onto the ground.
- Check for stability: Ensure the mower is stable before removing any supports.
- Reconnection: Reconnect the spark plug wire.
Tips for Lifting and Changing Lawn Mower Blades
- Wear appropriate clothing: Wear comfortable, sturdy shoes and long pants.
- Inspect your blades regularly: Check your blades for wear and tear. A sharp blade cuts cleanly and efficiently.
- Sharpen your blades: You can sharpen your blades yourself or take them to a professional.
- Replace worn blades: If your blades are severely worn or damaged, replace them.
- Read your owner’s manual: Consult your owner’s manual for specific instructions and recommendations for your mower model.
Safety Considerations
- Never lift a mower alone: If it’s heavy, get someone to help you.
- Always disconnect the spark plug wire: Before lifting or working on your mower, make sure the power source is disconnected and the spark plug wire is removed.
- Wear safety glasses: Protect your eyes from flying debris.
- Keep your back straight: Lift with your legs, not your back, to avoid injury.
- Use caution: Be careful when lifting and working on a lawn mower.
Conclusion
Changing lawn mower blades is an essential maintenance task that will improve your lawn’s health and appearance. While lifting a mower may seem daunting, it’s a straightforward process when you follow these steps. Remember to prioritize safety, gather the right tools, and use proper lifting techniques to ensure a smooth and successful experience. With a little care and attention, you can easily keep your lawn mower in tip-top shape and enjoy a lush, healthy lawn.
Frequently Asked Questions
1. What Tools Do I Need to Change Lawn Mower Blades?
You will need a few basic tools to safely change your lawn mower blades. These include a wrench that fits the blade bolt (often a 13/16-inch wrench), a pair of work gloves, and a piece of wood or a jack to support the mower deck. You may also want to have safety glasses, a cleaning brush, and some lubricating oil on hand.
It’s important to use the correct tools and safety gear to prevent accidents. Using the wrong wrench can damage the blade bolt, and failing to wear gloves or safety glasses can result in injury.
2. How Do I Safely Lift My Lawn Mower?
To lift your lawn mower safely, you should use a jack or a piece of wood to support the mower deck. Never attempt to lift the mower by the handle or by the blade itself.
If you are using a jack, position it under the center of the mower deck. If you are using a piece of wood, place it under the mower deck, near the blade. Once the mower is supported, you can remove the blade bolt and change the blades.
3. Should I Disconnect the Spark Plug Before Changing Blades?
Yes, it is very important to disconnect the spark plug before changing the blades. This will prevent the engine from starting accidentally, which could result in serious injury.
Locate the spark plug on the engine and remove the wire from it. If you have a mulching mower, you may also need to remove the mulch plug before changing the blades.
4. How Do I Remove and Install the Lawn Mower Blades?
To remove the blade, hold the blade firmly and loosen the blade bolt with the wrench. Once the bolt is loose, remove it completely and carefully remove the blade.
To install the new blade, align the blade with the blade bolt hole. Screw the bolt back on, but do not tighten it completely yet. Rotate the blade to ensure it is properly aligned. Once the blade is aligned, tighten the bolt securely.
5. How Do I Know When My Lawn Mower Blades Need Changing?
You should check your lawn mower blades regularly for signs of wear and tear. If the blades are bent, chipped, or dull, they should be replaced.
You may also notice that your lawn mower is not cutting the grass evenly or that it is leaving behind a lot of grass clippings. This could indicate that the blades are dull and need to be changed.
6. What Should I Do With My Old Lawn Mower Blades?
Old lawn mower blades can be very sharp and dangerous, so it is important to dispose of them properly.
You should never throw them in the trash or recycle them. Instead, you can take them to a local recycling center or metal scrap yard.
7. How Often Should I Change My Lawn Mower Blades?
The frequency with which you need to change your lawn mower blades will depend on how often you use your mower and the type of grass you are cutting.
However, it is generally recommended that you change your blades at least once a year. If you use your mower frequently, you may need to change the blades more often.