Find the right part faster
Multiple models matched. Select your model to confirm fit.

Genuine Toro 131-4547-03 Mulching/Recycling Lawn Mower Blade. Fits Toro walk-behind lawn mower with a 22-inch deck.

Mulching blade. Fits lawn mowers with a 21-inch deck.

Blade 21 mulch premium

Fan-mulching

Accelerator
For those in need of precise Lawn Boy mulching blade replacements, Repair Clinic offers genuine OEM Lawn Mower parts that ensure your equipment continues to perform to its specifications. Our selection of replacement Lawn Mower parts is designed to maintain the manufacturer's warranty and deliver a perfect fit for each Lawn Mower model. Whether you're a DIY enthusiast or a Lawn Equipment technician, you'll appreciate the quality and reliability of our mulching blades, which are essential for achieving a superior cut. Visit our Lawn Mower parts page for all your replacement needs, including mulching blades.
Common issues with mulching blades include dullness and uneven cuts. Regular inspection and timely replacement can prevent these problems. For all your Lawn Boy Lawn Mower needs, explore our extensive inventory of Lawn-Boy Lawn Mower parts to ensure optimal performance and longevity.
Maintaining your Lawn Boy lawn mower requires regular replacement of parts like the mulching blade to ensure optimal performance. Here are some frequently asked questions to help guide you through the process.
First, disconnect the spark plug to ensure safety. Turn the mower on its side, then use a wrench to remove the bolt securing the blade. Replace the old blade with a new Lawn Boy mulching blade and secure it tightly with the bolt. Reconnect the spark plug when done.
It's recommended to replace the mulching blade annually or after 25 hours of use. Inspect the blade regularly for nicks and dullness, as sharp blades improve cutting efficiency and lawn health.
This issue could be due to a dull or damaged blade. Ensure your mulching blade is sharp and properly installed. If the problem persists, consider replacing the blade. For more parts, visit our Lawn Equipment Parts page.
Repair Clinic is your go-to source for Lawn Boy replacement parts, offering competitive pricing and a price match guarantee. For other lawn mower parts, check our Lawn Mower Switch Parts page.


Upgrade your Lawn Boy mower with genuine OEM mulching blade replacement parts from Repair Clinic. Mulching blades are crucial for finely chopping grass clippings, promoting a healthier lawn and reducing the need for bagging. Utilize our model number lookup to find the precise mulching blade for your Lawn Boy mower, and benefit from our same-day shipping and Price Match Guarantee. For assistance with installation, visit our Lawn Mower Repair Help page. Explore more Lawn Boy Lawn Mower Parts for comprehensive lawn care solutions.
Locating the model number on your lawn mower is essential when looking for replacement lawn mower parts, like mulching blades. The model number is typically found on a label or metal plate on the mower's deck, frame, or near the engine. Having this number makes it easier to find and order the correct lawn mower replacement parts online. Use the model number for a quick lookup of mulching blades to fit your mower perfectly. Ensure smooth and efficient mowing by replacing worn or damaged blades promptly. For issues such as blades not engaging, inspect the blade control cable and clutch, replacing any faulty parts. To explore additional parts, visit our Lawn Mower Bag Parts page and discover other essential components. Remember, identifying your lawn mower model number is the first step to hassle-free lawn mower repair and maintenance.
Our dedicated customer support team is here to help you find the right Lawn Mower mulching blade replacement with ease. Available seven days a week, you can reach us via live chat for quick support. Repair Clinic offers a comprehensive selection of genuine OEM parts, ensuring you receive the highest quality replacements for your Lawn Mower. Easily locate your exact part using our model/part number lookup feature, and benefit from our no-hassle 365-day returns and price match guarantee. Common issues such as lawn mower blades not engaging can often be resolved by inspecting the blade control cable or clutch. Our expert troubleshooting assistance is here to guide you through any repair challenges. Whether you're a homeowner or a professional technician, trust Repair Clinic for a seamless ordering experience and access to DIY repair guides. Visit our website for more information and start your repair journey confidently today.

Repair Clinic has five ways for you to stop your lawn mower from leaking gas. Before we get to those, let's review how the gasoline you pour into the tank powers the mower.

Why does your lawn mower battery keep dying? Repair Clinic has done the research and this article will provide some answers, starting with what a battery's purpose is on a gas-powered lawn mower.

What's causing that black smoke to billow out of the engine? There are three likely reasons and they are all related to how a gas-powered lawn mower engine operates.