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STIHL Gas-Powered Straight Shaft Professional String Trimmer, 28.4cc, 16-1/2in. Cutting Width, Model# FS 91 R

Item# 63941
278 of 1273 reviewers received a sample product or took part in a promotion
STIHL Gas-Powered Straight Shaft Professional String Trimmer, 28.4cc, 16-1/2in. Cutting Width, Model# FS 91 R

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STIHL Gas-Powered Straight Shaft Professional String Trimmer, 28.4cc, 16-1/2in. Cutting Width, Model# FS 91 R

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$379.99

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  • In Store Only: 

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  • Reduced-Emission Engine Technology is designed to be 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)
  • Shoulder strap/carrying system helps distribute the weight of the equipment for increased operator comfort and improved maneuverability
  • Easily adjustable front handle with 360 degree rotation for comfort
  • Fully-lined drive shaft provides smooth operation and less vibration
  • High tech polymer housing is lightweight, withstands greater impact and is corrosion-resistant

See full description

  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Accessories

  • Warranty

  • Compare

Product Summary

This Stihl Gas-Powered Straight Shaft Professional String Trimmer is the well-rounded choice for professionals, featuring a low-emission engine and large fuel tank which provides long run times. With its rubberized loop handle, this straight-shaft trimmer delivers the nimble maneuverability needed to navigate obstacles, teamed with the power to cut them down. A simplified 3-step start procedure saves time on the front end, and a superior air filter keeps the trimmer running like a champ.
This item may be purchased at select Northern Tool stores. Not available for online order at NorthernTool.com.

What's Included

    (1) Professional string trimmer

Features + Benefits

  • Reduced-Emission Engine Technology is designed to be 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)
  • Shoulder strap/carrying system helps distribute the weight of the equipment for increased operator comfort and improved maneuverability
  • Easily adjustable front handle with 360 degree rotation for comfort
  • Fully-lined drive shaft provides smooth operation and less vibration
  • High tech polymer housing is lightweight, withstands greater impact and is corrosion-resistant
  • Start/Run/Stop controls are located on the handle for easy access and operation
  • Protected choke lever/knob helps prevent choke damage during operation
  • Throttle Trigger Interlock is a safety precaution that must be depressed before the trigger can be activated
  • Air Filter Cover can easily be removed for fast and simple filter cleaning or replacement
  • Protected or enclosed control cables eliminate dangling and loose wires
  • Heavy-duty steel-on-steel centrifugal clutch is designed to reduce slippage
  • Protected spark arrestor muffler has large baffles to help reduce noise level and contains a screen designed to reduce the emission of sparks

Key Specs

AttributeSpecification

item#

63941

Brand

Stihl

Manufacturer's Warranty

2 year limited warranty

Ship Weight

18.56 LB

Product Type

Trimmers

Primary Power Source

Gas

Max. Cutting Width

16.5 in

Cutting Width (in.)

16 1/2
AttributeSpecification

Displacement (cc)

28.4

Engine Displacement

28.4 cc

Fuel Tank Capacity (qt.)

0.75

Fuel Tank Capacity

0.75 qt

Cordless

Yes

Horsepower

1.27 HP

Line Diameter

0.095 in

Tool Weight

12.1

Reviews

Questions & Answers

1273 Reviews This action will navigate to reviews.

Questions

1–10 of 10 Questions  
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  1. Does it have a speed feed head

    1 answer

    1. The trimmer would be equipped with a speed feed style head.

      Helpful?

  2. Is this product a commercial product 

    1 answer

    1. The trimmer is classified as a commercial-grade, professional string trimmer.

      Helpful?

  3. Is this the newer km 90 r?

    1 answer

    1. Yes, the Stihl FS 91 R is a newer, more refined version of the older KM 90 R, featuring the same 28.4cc 4-MIX engine but with improved filtration, fuel capacity, and emissions.

      Helpful?

  4. Can you use a saw blade on it

    1 answer

    1. The Stihl model FS 91 R can be equipped with a saw blade. It would require a specific blade installation kit. This would be available through the manufacturer.

      Helpful?

  5. What string size is recommended for fs 91 r?

    1 answer

    1. The string size for this trimmer would be 0.095 inches. It is recommended to use square or non-rounded line.

      Helpful?

  6. Can you put a brush cutting head on this

    1 answer

    1. A brush cutting head is not available for this string trimmer.

      Helpful?

  7. Does this require non-ethanol gas?

    1 answer

    1. The engine is certified to operate on unleaded gasoline and Stihl two stroke engine oil at a mix ration of 50:1. Use mid grade unleaded gasoline with a minimum octane rating of 89 and no more than 10% ethanol content.

      Helpful?

  8. Where is this product made? 

    1 answer

    1. This item is manufactured in the United States.

      Helpful?

  9. CAN IT BE USED TO EDGE? AND WEEDEAT?

    1 answer

    1. The trimmer could not be used as an edger.

      Helpful?

  10. Is this a 2 cycle engine ??

    1 answer

    1. The FS 91 R is a 4-cycle engine requiring a 50:1 gas to oil mixture.

      Helpful?

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Warranty

Manufacturer's Warranty

2 year limited warranty

Extend Your Warranty Coverage with a Northern Protection Plan (NPP)

Replacement Plan — 1 Year

A Northern Protection Plan is available after adding the product to your shopping cart.

Recently Viewed Items

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STIHL Gas-Powered Straight Shaft Professional String Trimmer, 28.4cc, 16-1/2in. Cutting Width, Model# FS 91 R
4.5 out of 5 stars. 1273 reviews
278 of 1273 reviewers received a sample product or took part in a promotion

STIHL Gas-Powered Straight Shaft Professional String Trimmer, 28.4cc, 16-1/2in. Cutting Width, Model# FS 91 R

Item # 63941

$379.99