Made in America disclaimer stating "A majority of STIHL products sold in America are made in America of U.S. and global components."

FS 91

Name: FS 91
Brand: STIHL
SKU: fs91
Rating: 4.5616 (292 reviews)

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This trimmer's solid drive shaft offers more flexibility in trimming applications.

Features

Straps and Harnesses
TapAction™ AUTOCUT® Cutting Head
Bike Handle
Anti-Vibration System

If you’re a landscaping professional who uses their trimmer for mowing applications, grab the powerful STIHL FS 91 trimmer. Its bike-handle design adds greater comfort and leverage, thanks to its redesigned rubberized grips. The trimmer also features one-touch stop and a simplified starting procedure enabled by the semi-automatic choke lever. Its low exhaust emission engine is paired with a larger fuel tank, delivering 30% longer run times when compared to the previous model. The engine also includes improved air filtration and STIHL exclusive IntelliCarb™ technology for maximum RPM. When the terrain gets tough, this trimmer's solid steel drive shaft accepts a wide range of heavy-duty cutting heads, including metal blades, for maximum versatility.

Note: Not available for purchase or delivery in California

Cutting Heads & Blades Selection Chart (PDF)

Features
- Straps and Harnesses -
  They distribute the load from your hands to your shoulders. They also help reduce operator fatigue and make it easier to use trimmers, brushcutters and clearing saws for extended periods.
- TapAction™ AUTOCUT® Cutting Head -
  TapAction™ allows users to adjust the line length simply by tapping the cutting head against the ground.
- 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.
- 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.
- 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.
- 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.
- Simplified Starting Procedure -
  To get started, users 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. The tool will be ready to start again when the user is ready to get back to work.
- Air Filter Cover -
  Easily remove the cover for fast and easy filter cleaning or replacement.
- Protected or Enclosed Control Cables -
  Dangling and loose wires are eliminated.
- Protected Spark Arrestor Muffler -
  Large baffles reduce noise level and contain a screen designed to reduce the emission of sparks.
- Protected Spark Plug -
  The spark plug is protected yet easy to change.
- Protected Choke Lever/Knob -
  The choke is protected to help prevent damage.
- High-Tech Polymer Housing -
  Housings are lightweight, withstand greater impact, and are corrosion-resistant.
- Heavy-Duty Steel-On-Steel Clutch -
  Centrifugal clutch is designed to reduce slippage.
- 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.
- Upright Translucent Fuel Tank -
  Easily check the fuel level before starting work. If fuel is needed, the upright position makes the tank easier to fill.
- Fully-Lined Drive Shaft -
  A lined shaft provides smooth operation and less vibration.
- Throttle Trigger Interlock -
  This safety feature must be depressed before the trigger can be activated.
- 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°.
- 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.
- Made in America -
  A majority of STIHL products sold in America are made in America of U.S. and global materials.

Specifications

Questions And Answers

Reviews

Warnings And Safety
STIHL Trimmers & Edgers, the Right Tools for the Job - Video
How to Wind a STIHL Trimmer Head - Video
Cutting Heads & Blades Selection Chart (PDF)
FS 91 Instruction Manual (PDF)
Product Safety Manual (PDF)
STIHL Limited Warranty
Contact Us
Note: STIHL recommends use of fuel with no more than 10% Ethanol content. Using fuel with greater than 10% Ethanol content may cause damage to your equipment and may void your STIHL warranty.
Note: STIHL engine products with the Caring for Nature logo are cleaner than EPA Standards for exhaust emissions.
WARNING! Improper use of any trimmer/brushcutter can cause serious or fatal injury. Read, understand, and follow all safety instructions in your instruction manual. To reduce the risk of injury from blade contact, circular saw blades may be used on FS brushcutters that have a limitstop, a bicycle handle, and double shoulder harness and not on FS brushcutters with a "J" handle or loop handle. Other rigid blades may be used on FS brushcutters having a bicycle handle, a "J" handle, or a loop handle equipped with a barrier bar. To reduce the risk of eye injury always wear proper eye protection. Always use the appropriate deflector for the type of cutting attachment, as explained in your instruction manual.
WARNING! Improper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products.

STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.