Lawn Tractor Mulching Explained

Many garden tractor owners appreciate the versatility and efficiency that mulching offers. Instead of collecting grass clippings, mulching finely chops them and returns them to the lawn as a natural fertiliser. This not only saves you the hassle of disposing of clippings but also enriches your soil. If you own a John Deere L120 lawn tractor, or any of the L Series models, you're likely wondering about its mulching capabilities. This article will delve into the details of the L Series tractors and their mulching features, specifically addressing whether your L120 comes equipped for this popular lawn care technique.

Understanding the L Series Lawn Tractors

The John Deere L Series lawn tractors were designed to offer a range of options for homeowners, from basic 5-speed models to more feature-rich deluxe versions. The range includes the L100, L108, L111, L118, L120, and L130. Each model boasts different engine sizes and features to cater to varying needs and budgets. For instance, the L100 features a 17.0 hp Briggs & Stratton engine, while the L120 is equipped with a more powerful 22.0 hp Briggs & Stratton V-twin engine.

These tractors are built with a focus on durability and performance. The injection-molded JD LOY UV-resistant polymer hood ensures the tractor resists rust and fading, maintaining its good looks over time. Furthermore, features like the two-pedal foot control on models from the L108 upwards, and the electric PTO on the L120 and L130, enhance the user experience, making operation more intuitive and less strenuous.

The Edge Cutting System and Mulching Capability

A key component of the L Series tractors is "The Edge Cutting System." This system is built around strong, stamped 12-gauge steel mower decks available in 42-inch and 48-inch sizes. These decks are specifically designed to be mulch-ready. The deep-deck design, combined with rolled metal edges, creates an efficient airflow that allows for effective mulching. The mower blades are also designed to hold an edge longer, ensuring a cleaner cut, which is essential for good mulching.

Crucially, the information provided states that "Both 42-in. and 48-in. three-in-one mowers can be converted from side-discharge to mulching to bagging without tools or blade change required. Mulching cover is included as standard equipment on all L Series Lawn Tractors." This directly answers the question for owners of the L120. The L120, being part of the L Series and typically featuring a 42-inch or 48-inch deck depending on specific configuration, comes standard with a mulching cover.

What is a Mulching Cover?

A mulching cover, sometimes referred to as a mulch plug or mulch kit, is a piece of equipment that fits into the mower deck's discharge chute. Its purpose is to block the opening, preventing clippings from being ejected. This forces the clippings to stay within the deck, where they are cut multiple times by the blades into very fine pieces. These fine clippings then fall back onto the lawn, decomposing and returning nutrients to the soil. Without this cover, the clippings would simply be thrown out the side of the deck.

Benefits of Mulching Your Lawn

Mulching your lawn offers several significant advantages:

• Natural Fertilisation: As the clippings decompose, they release nitrogen and other essential nutrients back into the soil, promoting healthier grass growth.
• Moisture Retention: The layer of mulch can help the soil retain moisture, reducing the need for frequent watering.
• Weed Suppression: A good layer of mulch can help stifle the growth of new weeds by blocking sunlight.
• Improved Soil Structure: Over time, the organic matter from mulched clippings can improve the soil's texture and aeration.
• Time and Cost Savings: You save time by not having to bag and dispose of clippings, and you can potentially save money on fertilisers.

The Edge Cutting System on your L120, with its specially designed deck and blades, is optimized to create the fine clippings necessary for effective mulching, making the most of these benefits.

Comparing L Series Models and Features

To illustrate the differences and commonalities within the L Series, consider this overview:

As you can see from the table, the mulching cover is a standard feature across all L Series models, including your L120. The L120 stands out as a deluxe model, offering a more powerful engine, the convenience of electric PTO for engaging the mower deck, and the inclusion of an hourmeter with a Service-Minder system to alert you to necessary maintenance.

How to Engage Mulching Mode on Your L120

Using the mulching feature on your L120 is straightforward. Since the mulching cover is included as standard equipment, you likely already have it. If you've been using the side-discharge function, you may have removed it or it might be stored separately.

1. Identify the discharge chute: This is typically located on the right side of the mower deck when you are seated on the tractor.
2. Locate your mulching cover: It's a specially shaped piece designed to fit snugly into the discharge opening.
3. Install the cover: Depending on the specific design, it might slide or clip into place. The key is to ensure it creates a secure seal, preventing clippings from escaping. The documentation for the L Series highlights that this conversion can be done without tools, so it should be a simple process.
4. Adjust cutting height: For optimal mulching, it's generally recommended to cut no more than one-third of the grass blade's length at a time. Use the easy-lift mower deck height adjustment system, conveniently located on the left side of the operator's seat, to set your desired cutting height. The cut-height memory indicator can be helpful for consistency.
5. Mow at an appropriate speed: For effective mulching, especially in thicker grass, you might need to slow down slightly. This gives the blades more time to chop the clippings into fine particles. The two-pedal foot control on your L120 allows for easy selection of speed and direction.

Frequently Asked Questions (FAQs)

Q1: Does the John Deere L120 lawn tractor come with a mulching kit?

A1: Yes, the John Deere L120, as part of the L Series, includes the mulching cover as standard equipment. The 42-inch and 48-inch mower decks are "mulch-ready" and can be converted to mulching mode without tools.

Q2: What is the benefit of mulching grass clippings?

A2: Mulching returns valuable nutrients to your lawn, acting as a natural fertiliser, helps retain soil moisture, and can suppress weed growth. It also saves you the effort of collecting and disposing of clippings.

Q3: How do I switch my L120 mower from side-discharge to mulching?

A3: You need to install the mulching cover into the discharge chute of the mower deck. This is a tool-free process on the L Series tractors.

Q4: Can I mulch wet grass?

A4: While it's best to avoid mulching very wet or clumpy grass, as it can lead to clumping on the lawn surface, the Edge Cutting System on your L120 is designed for efficient mulching. If the grass is only slightly damp, it should still perform adequately. For best results, mow regularly and avoid cutting excessively long grass.

Q5: Do I need to change the mower blades for mulching?

A5: No, the L Series tractors, and specifically their Edge Cutting System, are designed so that the conversion from side-discharge to mulching or bagging can be done without a blade change. The blades are intended to provide a good cut quality for all three functions.

Conclusion

For owners of the John Deere L120 lawn tractor, the answer is a definitive yes – your tractor is equipped for mulching, and the necessary cover is included as standard. The L Series, with its robust Edge Cutting System, is designed to make mulching an efficient and beneficial part of your lawn care routine. By understanding how to properly engage the mulching mode and following best practices, you can enjoy a healthier, greener lawn while saving time and effort. So, go ahead and install that mulching cover and let your lawn reap the rewards of this natural fertilization method!

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