Stihl RL-MM Yard Boss Instruction Manual

Pages 36

Year 2020

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Stihl RL-MM Yard Boss Specification

The Stihl RL-MM Yard Boss is a versatile and robust multi-task tool designed for efficient lawn care and soil cultivation. Engineered for both residential and professional use, this attachment transforms the Yard Boss powerhead into a powerful dethatcher. Its primary function is to remove moss and matted layers of grass, promoting healthier lawn growth by allowing for better water, air, and nutrient penetration.

The RL-MM features a high-quality, durable construction comprising a series of spring steel tines that effectively lift and remove unwanted debris without damaging the soil. The working width is optimized for balanced maneuverability and efficient coverage, ensuring thorough dethatching across various lawn sizes. Its lightweight design aids in easy handling, reducing user fatigue during extended use.

This attachment is compatible with the MM 55 Yard Boss engine, leveraging the powerhead's reliable performance and ergonomic design. The coupling mechanism ensures a secure fit while allowing for quick and tool-free switching between other attachments, enhancing the system's versatility. The RL-MM is engineered for low maintenance, featuring wear-resistant components that extend its operational life.

Safety considerations are integral to its design, with protective guards minimizing the risk of debris kickback. The attachment is designed to operate smoothly on different terrains, making it suitable for diverse landscaping projects. Overall, the Stihl RL-MM Yard Boss is an essential tool for maintaining a healthy, vibrant lawn, offering a combination of efficiency, durability, and user-friendly operation. It reflects Stihl's commitment to providing innovative solutions that meet the demands of modern landscaping and gardening.

Stihl RL-MM Yard Boss F.A.Q.

How do I start the Stihl RL-MM Yard Boss?

To start the Stihl RL-MM Yard Boss, first ensure that the unit is on a flat surface. Set the control lever to the 'Start' position, press the primer bulb several times until fuel is visible, and pull the starter grip firmly until the engine fires.

What should I do if the engine won't start?

If the engine won't start, check the fuel level, ensure the spark plug is clean and properly connected, and verify that the air filter is not clogged. Additionally, make sure the choke is in the correct position for starting.

How do I maintain the tines on my Yard Boss?

Regular maintenance of the tines includes cleaning them after each use to remove dirt and debris. Periodically check for signs of wear or damage and sharpen or replace them as necessary. Lubricate moving parts to prevent rust.

Why does my Yard Boss vibrate excessively during operation?

Excessive vibration may be caused by unbalanced or damaged tines. Inspect the tines for wear or damage and replace if needed. Ensure all mounting hardware is secure and check for debris lodged in the tine area.

How often should I change the air filter?

The air filter should be checked after every 5 hours of operation and cleaned or replaced if necessary. In dusty conditions, more frequent checks may be required.

What type of fuel is recommended for the Stihl RL-MM Yard Boss?

Use fresh, unleaded gasoline with a minimum octane rating of 89, mixed with a high-quality 2-cycle engine oil at a 50:1 ratio. Avoid using fuel that contains more than 10% ethanol.

How do I store the Yard Boss for the winter?

To store the Yard Boss, drain the fuel tank and run the engine until it stops. Clean the unit thoroughly, remove the spark plug, and add a small amount of oil into the cylinder before replacing the spark plug. Store in a dry, well-ventilated area.

Why is my Yard Boss engine running rough?

A rough-running engine can result from a dirty air filter, old fuel, or a fouled spark plug. Check and clean the air filter, replace old fuel with a fresh mix, and inspect the spark plug for cleanliness and proper gap.

How do I adjust the idle speed on my Yard Boss?

To adjust the idle speed, locate the idle adjustment screw on the carburetor. Turn the screw clockwise to increase idle speed or counterclockwise to decrease it, ensuring the engine runs smoothly without the tines engaging.

What safety precautions should I take while using the Yard Boss?

Always wear appropriate personal protective equipment, such as goggles, gloves, and sturdy footwear. Keep bystanders and pets at a safe distance, and avoid operating on steep slopes or uneven terrain. Read the manual thoroughly before use.