Stihl FS 111 RX Instruction Manual

Pages 92

Year 2020

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Stihl FS 111 RX Specification

The Stihl FS 111 RX is a professional-grade trimmer designed for robust performance and efficiency in landscaping and grounds maintenance. It is equipped with a powerful 31.4 cc 4-MIX® engine that combines the benefits of a 2-stroke and 4-stroke engine, providing a balance of power and fuel efficiency while reducing emissions. The engine's displacement allows it to deliver strong torque, making it ideal for tackling dense grass and tough weeds. The trimmer features a lightweight design, weighing approximately 12.1 pounds, which enhances maneuverability and reduces operator fatigue during extended use.

The FS 111 RX includes a straight shaft design, providing a longer reach and enabling precise trimming in hard-to-reach areas. Its ergonomic loop handle offers superior comfort and control, allowing for versatile handling in various working conditions. The trimmer is equipped with a simplified starting procedure, incorporating a semi-automatic choke lever and a decompression valve to facilitate easier starts. It also features a large fuel tank with a capacity of 710 cc, ensuring extended operation time with fewer refueling interruptions.

Additionally, the FS 111 RX incorporates advanced anti-vibration technology, minimizing operator strain and enhancing comfort during prolonged use. The trimmer is compatible with a variety of cutting attachments, allowing for adaptability to different tasks and environments. Its robust construction and high-quality components ensure durability and reliability in demanding professional applications. Overall, the Stihl FS 111 RX is engineered to deliver exceptional performance and efficiency, making it a preferred choice for professional landscapers and gardeners.

Stihl FS 111 RX F.A.Q.

How do I start the Stihl FS 111 RX trimmer?

To start the Stihl FS 111 RX, ensure it's on a flat surface. Set the choke lever to 'cold start,' press the fuel pump bulb several times until fuel is visible, and pull the starter cord until the engine fires. Then, move the choke to 'run' and pull again until the engine starts.

What type of fuel mix should be used for the FS 111 RX?

Use a 50:1 fuel mixture ratio of unleaded gasoline and high-quality two-stroke engine oil. It's important to use fresh fuel and mix it in a safe container before filling the tank.

How can I replace the trimmer line on the FS 111 RX?

To replace the trimmer line, turn off the engine and disconnect the spark plug. Remove the spool from the head, wind the line in the direction of the arrow on the spool, and reattach the spool to the trimmer head.

What should I do if the FS 111 RX won't start?

Check the fuel level and ensure it's fresh. Inspect the spark plug for damage or wear, and clean or replace it if necessary. Make sure the air filter is clean, and check the fuel lines for any blockages or cracks.

How often should I perform maintenance on the FS 111 RX?

Routine maintenance should be performed every 25 hours of operation. This includes checking the spark plug, cleaning or replacing the air filter, and inspecting the fuel system. More comprehensive servicing is recommended annually or every 100 hours.

How do I adjust the carburetor on the FS 111 RX?

To adjust the carburetor, locate the adjustment screws on the side of the engine. Use a small screwdriver to adjust the 'L' screw for low speed and 'H' screw for high speed until the engine runs smoothly. Refer to the manual for specific tuning settings.

What is the proper way to store the FS 111 RX during the off-season?

For off-season storage, empty the fuel tank and run the engine until it stops to clear fuel from the carburetor. Clean the trimmer thoroughly, check for any damage, and store it in a dry, dust-free environment.

How do I clean the air filter on the FS 111 RX?

To clean the air filter, remove the cover, take out the filter, and wash it gently with warm, soapy water. Rinse thoroughly and let it dry completely before reinstalling. Replace the filter if it's excessively dirty or damaged.

Why is the FS 111 RX vibrating excessively during use?

Excessive vibration can be caused by an unbalanced or damaged trimmer head, loose parts, or worn components. Inspect the trimmer head, shaft, and handle for any issues and tighten or replace parts as necessary.

What safety precautions should be taken when using the FS 111 RX?

Always wear protective gear, including eye and ear protection, gloves, and long clothing. Ensure the area is clear of bystanders and obstacles, and never operate the trimmer above waist height. Follow all safety instructions in the manual.