Stihl FS 66 Instruction Manual

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Stihl FS 66 Specification

The Stihl FS 66 is a versatile and robust brushcutter designed for both professional landscaping tasks and demanding home gardening needs. It is powered by a high-performance two-stroke engine, known for its reliability and efficient fuel consumption. The engine displacement is approximately 40 cubic centimeters, providing sufficient power to tackle thick brush and dense vegetation with ease. The FS 66 features a straight shaft design, which enhances its durability and allows for greater reach in hard-to-access areas.

For operator comfort, the FS 66 is equipped with an anti-vibration system, reducing fatigue during extended use. The ergonomic handle design allows for a comfortable grip and precise control. The brushcutter includes a multi-function control handle, integrating all the essential controls into easy reach, thereby enhancing user convenience and safety.

The cutting head is adaptable, compatible with a range of cutting attachments, including metal blades and nylon line heads, providing flexibility for various cutting tasks. The FS 66 also features a robust gearbox that efficiently transmits power from the engine to the cutting head, ensuring optimal performance.

Starting the FS 66 is simplified by the inclusion of a manual fuel pump and electronic ignition system, which work together to enable quick and reliable starts. The fuel tank has a moderate capacity, designed to provide a balance between operational runtime and weight.

Overall, the Stihl FS 66 stands out as a powerful and durable tool, ideal for users needing a dependable solution for cutting through tough vegetation with minimal effort.

Stihl FS 66 F.A.Q.

How do I start the Stihl FS 66 trimmer?

To start the Stihl FS 66, ensure the stop switch is in the 'I' position, press the primer bulb until fuel is visible, set the choke lever to cold start, pull the starter rope until the engine fires, then move the choke to run position and pull again until it starts.

What is the correct fuel mixture for the Stihl FS 66?

The correct fuel mixture for the Stihl FS 66 is a 50:1 ratio of unleaded gasoline to Stihl 2-cycle engine oil.

How do I replace the trimmer line on the Stihl FS 66?

To replace the trimmer line, remove the spool from the trimmer head, cut two lengths of line about 13 feet each, wind each line onto the spool in the direction of the arrow, and reassemble the head.

What should I do if the Stihl FS 66 won't start?

Check the fuel mixture, ensure the spark plug is clean and properly gapped, verify the air filter is not clogged, and inspect the ignition system.

How often should I clean the air filter on the Stihl FS 66?

Clean the air filter after every 10 hours of operation or more frequently if operating in dusty conditions.

How do I adjust the carburetor on the Stihl FS 66?

To adjust the carburetor, locate the adjustment screws marked H (High speed) and L (Low speed), and use a screwdriver to fine-tune the engine performance while the trimmer is running. Consult the manual for specific settings.

What type of spark plug is suitable for the Stihl FS 66?

The recommended spark plug for the Stihl FS 66 is the Bosch WSR 6 F or an equivalent. Ensure the gap is set to 0.02 inches (0.5 mm).

How do I perform regular maintenance on the Stihl FS 66?

Regular maintenance includes cleaning the air filter, checking the spark plug, inspecting the fuel system, lubricating the gearhead, and checking the trimmer line.

What safety precautions should be taken while using the Stihl FS 66?

Always wear protective eyewear, gloves, long pants, and sturdy shoes. Ensure the area is clear of bystanders and obstacles before operation.

How do I store the Stihl FS 66 for the off-season?

For off-season storage, drain the fuel tank, clean the trimmer thoroughly, check for damaged parts, lubricate moving parts, and store in a dry, well-ventilated area.