Easily remove the cover for fast and easy filter cleaning or replacement.
FS 91 Gasoline Grass Trimmer
The STIHL FS 91 R delivers the power professionals need for demanding trimming and clearing work, with a design that excels where maneuverability matters most. Its high-torque STIHL 4-MIX® engine is paired with a loop handle that makes it easier to work around trees, landscape features, fence lines, and other obstacles, giving operators greater freedom of movement in more confined areas. Built for productivity throughout the day, the FS 91 R features a padded double shoulder harness that helps reduce fatigue during extended use, while the multi-function handle keeps essential controls close at hand. A vertical pleated paper air filter helps extend engine life and supports long service intervals, while the semi-automatic choke lever and One-Touch Stop switch simplify starting and restarting to help keep work moving with fewer interruptions.
Note: Not available for purchase or delivery in California.
This Trimmer is compatible with the following Cutting Heads:
- FixCut™ 31-2 (4001 710 2105) | Optional Line Sizes: .080", .095", .105"
- AutoCut® C 26-2 (4002 710 2169) | Standard Line: .095" | Optional Line Sizes: .095", .105"
- DuroCut 20-2 (4002 710 2182) | Standard Line: .120" | Optional Line Sizes: .080", .095", .105"
- STIHL SuperCut™ 20-2 (4002 710 2184) | Standard Line: .095"
- TrimCut™ C 32-2 (4002 710 2198) | Standard Line: .105" | Optional Line Sizes: .095"
- STIHL AutoCut ® 27-2 (4002 820 2302) | Standard Line: .095" | Optional Line Sizes: .105"
Guaranteed Safe Checkout
FS 91 Gasoline Grass Trimmer
The STIHL FS 91 R delivers the power professionals need for demanding trimming and clearing work, with a design that excels where maneuverability matters most. Its high-torque STIHL 4-MIX® engine is paired with a loop handle that makes it easier to work around trees, landscape features, fence lines, and other obstacles, giving operators greater freedom of movement in more confined areas. Built for productivity throughout the day, the FS 91 R features a padded double shoulder harness that helps reduce fatigue during extended use, while the multi-function handle keeps essential controls close at hand. A vertical pleated paper air filter helps extend engine life and supports long service intervals, while the semi-automatic choke lever and One-Touch Stop switch simplify starting and restarting to help keep work moving with fewer interruptions.
Note: Not available for purchase or delivery in California.
This Trimmer is compatible with the following Cutting Heads:
- FixCut™ 31-2 (4001 710 2105) | Optional Line Sizes: .080", .095", .105"
- AutoCut® C 26-2 (4002 710 2169) | Standard Line: .095" | Optional Line Sizes: .095", .105"
- DuroCut 20-2 (4002 710 2182) | Standard Line: .120" | Optional Line Sizes: .080", .095", .105"
- STIHL SuperCut™ 20-2 (4002 710 2184) | Standard Line: .095"
- TrimCut™ C 32-2 (4002 710 2198) | Standard Line: .105" | Optional Line Sizes: .095"
- STIHL AutoCut ® 27-2 (4002 820 2302) | Standard Line: .095" | Optional Line Sizes: .105"
The pictures shown are sample photos. The actual appearance of the equipment features and their specific attachment to the product may differ from the pictorial representations, but will have the same functionality.
A lined shaft provides smooth operation and less vibration.
Centrifugal clutch is designed to reduce slippage.
Housings are lightweight, withstand greater impact, and are corrosion-resistant.
Loop handle grass trimmers and brushcutters are ideal for trimming between bushes and shrubs and other areas where space is limited.
A majority of STIHL products sold in America are made in America of U.S. and global materials.
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.
The choke is protected to help prevent damage.
Large baffles reduce noise level and contain a screen designed to reduce the emission of sparks.
The spark plug is protected yet easy to change.
Dangling and loose wires are eliminated.
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.
TapAction™ allows users to adjust the line length simply by tapping the cutting head against the ground.
This safety feature must be depressed before the trigger can be activated.
Easily check the fuel level before starting work. If fuel is needed, the upright position makes the tank easier to fill.