Stihl FS-MM Yard Boss Instruction Manual

Pages 48

Year 2020

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Stihl FS-MM Yard Boss Specification

The Stihl FS-MM Yard Boss is a versatile multi-task tool designed for various lawn care and garden maintenance tasks. This tool is powered by a robust 27.2 cc, 2-stroke engine, providing reliable performance across a range of applications. It features a lightweight design, weighing approximately 9.5 pounds without attachments, which enhances maneuverability and ease of use, particularly for extended periods of operation.

The Yard Boss is engineered for compatibility with multiple attachments, making it an adaptable tool for edging, cultivating, aerating, and dethatching. Its quick-change gearbox allows for seamless attachment swaps, facilitating a swift transition between tasks. The ergonomic loop handle is designed for user comfort, reducing fatigue through extended use, and providing optimal control and precision during operation.

For added convenience, the Yard Boss includes an easy-start system, reducing the effort required to start the engine. This feature is complemented by a simplified starting procedure, ensuring reliable ignition even in varying weather conditions. The throttle trigger lockout and stop switch are strategically positioned for user safety, preventing accidental activation and ensuring immediate engine shutdown when necessary.

The FS-MM Yard Boss also prioritizes environmental considerations, delivering efficient fuel consumption and reduced emissions compliant with EPA standards. Maintenance is simplified through easily accessible components, allowing for straightforward cleaning and servicing to prolong tool longevity. This combination of power, versatility, and user-friendly design makes the Stihl FS-MM Yard Boss a practical choice for both residential and professional landscapers seeking an efficient solution for diverse gardening tasks.

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

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

To start the Stihl FS-MM Yard Boss, set the machine on a flat surface, switch the ignition to "On," set the choke to the cold start position if the engine is cold, and pull the starter cord until the engine fires. Once it fires, move the choke to the run position and pull the cord again until the engine starts.

What type of fuel should be used in the Stihl FS-MM Yard Boss?

Use a high-quality two-stroke engine oil mixed at a ratio of 50:1 with unleaded gasoline. The gasoline should have a minimum octane rating of 89.

How do I change the attachments on the Stihl FS-MM Yard Boss?

To change attachments, ensure the engine is off and cool. Remove the locking pin, slide the current attachment off the drive shaft, and slide the new attachment in place. Reinsert the locking pin to secure the attachment.

What routine maintenance is required for the Stihl FS-MM Yard Boss?

Routine maintenance includes cleaning the air filter regularly, checking and replacing the spark plug annually, lubricating the gearbox, and inspecting the fuel filter for clogs.

How do I troubleshoot a Stihl FS-MM Yard Boss that won't start?

Check the fuel level and ensure it's fresh. Verify the spark plug is clean and properly gapped. Inspect the air filter for dirt or debris. If these do not resolve the issue, consult the user manual or contact a professional technician.

Can I use the Stihl FS-MM Yard Boss for edging?

Yes, the Stihl FS-MM Yard Boss can be used for edging when equipped with the appropriate edging attachment. Ensure the attachment is securely installed before use.

How do I store the Stihl FS-MM Yard Boss during the off-season?

Drain the fuel tank to prevent stale fuel from clogging the system. Clean the machine thoroughly and store it in a dry, sheltered location. Consider removing the spark plug and adding a few drops of oil in the cylinder to prevent rust.

What safety precautions should I take when using the Stihl FS-MM Yard Boss?

Always wear appropriate safety gear, including gloves, goggles, and sturdy footwear. Keep bystanders at a safe distance, and never operate the machine indoors due to exhaust fumes.

How do I clean the air filter on the Stihl FS-MM Yard Boss?

Remove the air filter cover and take out the filter. Wash it in warm, soapy water and let it air dry. Reinstall the filter and cover once it's completely dry.

What should I do if the Stihl FS-MM Yard Boss vibrates excessively during operation?

Check for loose parts or attachments and tighten them if necessary. Inspect the tines or blades for damage or wear, and replace them if needed. If the issue persists, consult a professional technician.