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FS 91

The STIHL FS 91 trimmer delivers power and comfort for landscaping professionals. Its bike-handle design is great for mowing applications – and it’s more com... Read more


$359.95
Price may vary based on location and options.

features

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Simplified Starting Procedure

To get started, simply pump the fuel primer, set the choke and pull the starter cord. The built-in stop switch allows the user to turn off the engine with a simple press of the button. When the engine is off, the throttle lock automatically returns to the “start” setting. Your power tool will be ready to be started when you’re ready to get back to work. See it in action htmlSee it in action!See it in action html

IntelliCarb™ Compensating Carburetor

The IntelliCarb™ Compensating Carburetor measures the air pressure on the clean side of the air filter and adjusts the metering diaphragm in the carburetor. This keeps the RPM at a consistent level, even when the air filter begins to clog.

Loop Handle (R)

Loop handle grass trimmers and brushcutters are ideal for trimming between bushes and shrubs and other areas where space is limited.

Anti-Vibration System

STIHL has a system for minimizing the vibration levels of handheld outdoor power equipment. The STIHL anti-vibration system helps reduce operator fatigue and provides a more comfortable working experience.

Built in the USA

Indicates products that are built in the United States from domestic and foreign parts and components.More Information

Reduced-Emission Engine Technology - Caring for Nature

The STIHL Inc. “Caring for Nature” seal identifies its powered products that are more environmentally conscious, producing zero or low exhaust emissions. STIHL Inc. defines “low exhaust emissions” as being cleaner than EPA and/or CARB exhaust emission standards.More Information

Shoulder Strap / Carrying System

Using a shoulder strap or carrying system helps distribute the weight of the equipment for increased operator comfort and improved maneuverability.

Bike Handle

When used in conjunction with a harness, the bike handle allows the machine to be easily guided, enabling a smooth horizontal mowing action to cover large areas quickly and efficiently. With soft grips for increased comfort, the bike handle provides greater control and helps reduce operator fatigue.See it in action!

Multi-Function Control Handle

Having easy access to all of the controls on one comfortable handle makes it easy to complete tasks so the operator’s hand never has to leave the handle.

Tool-Free Handle Adjustment

The central wing nut enables easy adjustment without the use of tools. For transportation and space-saving storage, the handle can be rotated 90°.

Cutting Heads & Blades Selection Chart

Need help selecting a cutting head or blade for your STIHL trimmer or brushcutter? Click here to view the Cutting Heads & Blades Selection Chart(PDF Format).

Purge Pump Primer

By pressing the bulb, this small fuel pump delivers fuel to the carburetor, reducing the number of starting pulls needed after an extended break between uses.

Fully Lined Drive Shaft

Provides smooth operation and less vibration.

High Tech Polymer Housing

Housings are lightweight, withstand greater impact and are corrosion-resistant.

Protected Choke Lever/Knob

Helps prevent damage.

Throttle Trigger Interlock

Must be depressed before the trigger can be activated.

Air Filter Cover

Easily removed for fast and easy filter cleaning or replacement.

Protected or Enclosed Control Cables

Eliminate dangling and loose wires.

Heavy-Duty Steel-On-Steel Clutch

Centrifugal clutch is designed to reduce slippage.

Protected Spark Plug

Protected yet easy to change.

Protected Spark Arrestor Muffler

Has large baffles which reduce noise level and contains a screen designed to reduce the emission of sparks.

Upright Translucent Fuel Tank

Allows operator to easily check fuel level before starting work. Upright position makes it easier to refill.

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FS 91 Specifications
DISPLACEMENT28.4 cc (1.73 cu. in.)
ENGINE POWER0.95 kW (1.27 bhp)
WEIGHT*5.8 kg (12.8 lbs.)*
FUEL CAPACITY710 cc (24.0 oz.)
CUTTING SWATH16.5"
POWER SOURCEGas

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