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FC 91

FC 91
A professional, curved-shaft edger with high blade speed, a low-emission engine, and more.

Product Description

Add a professionally landscaped look to sidewalks, walkways and driveways with the STIHL FC 91 edger. With its large 710 cc fuel tank and low-emission engine, this professional edger delivers 30% longer run times than the FC 90. It features a vertical pleated air filter for better filtration and STIHL-exclusive IntelliCarb™ technology for maximum RPMs when air filter begins to clog. It also features one touch stop and a simplified starting procedure enabled by the semi-automatic choke lever. It’s a must-have for high-volume landscaping professionals.

Model Features

  • 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

  • Built in the USA
    Indicates products that are built in the United States from domestic and foreign parts and components.

    More information

  • Skid Plate
    All STIHL edgers come equipped with a skid plate to protect the gearbox during use.
  • Adjustable depth wheel
    The adjustable depth wheel allows user to control the depth of the cut.


28.4 cc (1.73 cu. in.)
0.95 kW (1.27 bhp)
710 cc (24.0 oz.)
20.3 cm (8.0 in.)
25.4 mm (1.0 in.)
1:1.235 8,100 rpm
6.0 kg (13.2 lbs.)
*Dry weight.

Important Information

Note: STIHL engine products with the Caring for Nature logo are cleaner than EPA Standards for exhaust emissions.

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. Learn More…

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.


FC 91 is rated 5.0 out of 5 by 6.
Rated 5 out of 5 by from Glad I upgraded to Stihl I am a 66 year old female with lots of trimming, edging and brush cutting to be done on my property. This trimmer (with bicycle handle) is well balanced and easy to use. Starts easily and performs well. I have previously bought lesser models from other more.
Date published: 2017-10-20
Rated 5 out of 5 by from WOW I have been in the landscaping business for about 6 months, since I started, I have been using a box store brand, model, and it has been okay to say the least. I bought this edger today and did my yard first as I was walking back up my driveway I had to take a double look the edges were astounding. This is one awesome machine!
Date published: 2017-10-09
Rated 5 out of 5 by from I will never own anyother edger but Stihl What use to take all day now I can edge in 5 minutes. I no longer spend more money on string than I could have hired someone to edge. I am a 68 year young woman who can handle edger beautifully
Date published: 2017-10-04
Rated 5 out of 5 by from Best chooce Never used a stick edger until I bought this. Now I do the edging in half the time. Best piece of equipment I bought.
Date published: 2017-09-13
Rated 5 out of 5 by from Very strong machine. Can cut through farm grass and heavy weeds with ease. Excellent idle coupled with easy start. I spent the money for quality. Even so, you never know what a product will be like until you put it to the test. The 91 worked extremely well in heavy weed, tall grass applications. It's easy to use and starts without a fuss. I would also say that the machine has some incredible torque which keeps it from getting bogged down like typical weed eating/wacking machines. Another plus: very economical. Doesn't burn through fuel as quickly as other machines I've owned and used in similar applications. I'm sold on Stihl!!! Worth the money.
Date published: 2017-08-15
Rated 5 out of 5 by from Very nice edger My yard had not been edged for a while and was pretty thick. This edger cut right through producing a very clean edge. Glad I bought it.
Date published: 2017-08-15
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Standard Features

  • Common Features for Edgers
    View the features common to many STIHL edgers.

You Will Also Need

For Your Safety


FC 91 Instruction Manual (PDF)
STIHL Trimmers & Edgers, the Right Tools for the Job - Video
STIHL Limited Warranty
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