Infographic of FS 91 R pointing out the Vertical Pleated Paper Air Filter, Semi-Automatic Choke Lever, One-Touch Stop and Tapaction Autocut 27-2 Head

Image with user review for FS 91 R that reads "Strong enough for any job."

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

Man in STIHL Reflective Safety Vest trimming alongside bench using the FS 91 R

Close up of FS 91 R trimming alongside bench

Man using FS 91 R to trim along lawn edge in front of house

Close up of FS 91 R trimming alongside fence

Man in STIHL protective gear trimming along the edge of a stone wall with the FS 91 R

FS 91 R

Name: FS 91 R
Brand: STIHL
SKU: fs91r
Rating: 4.4009 (1145 reviews)

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The solid drive shaft of this trimmer offers more flexibility in trimming applications.

Features

TapAction™ AUTOCUT® Cutting Head
Loop Handle (R)
Multi-Function Control Handle
Air Filter Cover

Fulfilling the demanding landscaper’s trimming needs, the STIHL FS 91 R trimmer is the well-rounded choice for professionals. It features a low exhaust emission engine and large fuel tank which provides 30% longer run times than the previous model. With its rubberized loop handle, this straight-shaft trimmer delivers a comfortable grip, the maneuverability needed to navigate obstacles, and the power to get the job done. The FS 91 R trimmer also has a simplified three-step start procedure that saves time and a superior air filter benefiting you in the long run.

Cutting Heads & Blades Selection Chart (PDF)

Features
- TapAction™ AUTOCUT® Cutting Head -
  TapAction™ allows users to adjust the line length simply by tapping the cutting head against the ground.
- Loop Handle (R) -
  Loop handle grass trimmers and brushcutters are ideal for trimming between bushes and shrubs and other areas where space is limited.
- 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.
- 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.
- 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 R Instruction Manual (PDF)
Product Safety Manual (PDF)
STIHL Limited Warranty
Contact Us
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.
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 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.