FSA 90 R - $299.95 DSRP


Distributor Suggested Retail Price
FSA 90 R w/o battery & charger

DSRP: $299.95

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Professional straight-shaft trimmer powered by a 36-volt Lithium-Ion battery for excellent cutting performance. Batteries & chargers can be purchased separately or as a combined set with tool.

Get the benefits of Lithium-ion technology plus the power of STIHL with the FSA 90 R trimmer. This straight-shaft, battery-powered trimmer is great for landscaping in noise-sensitive or highly populated areas. Conveniently lightweight, the FSA 90 R is both portable and easy to operate. The trimmer’s high cutting speed plus its 15” cutting width will help you trim more in less time. It starts insta...Read More
Print Spec Sheets
FSA 90 R Specifications
CUTTING WIDTH 35 cm (15")
WEIGHT* (w/ Recommended Battery) w/ AP 300 4.5 kg (9.9 lbs.)
POWER SOURCE Battery
BATTERY SERIES AP Series
RUN TIME (w/ AP 100) Up to 10 Minutes
RUN TIME (w/ AP 300) Up to 30 Minutes (Recommended combination)
RUN TIME (w/ AR 1000) Up to 80 Minutes
RUN TIME (w/ AR 2000) Up to 120 Minutes
RUN TIME (w/ AR 3000) Up to 150 Minutes
*Battery and charger sold separately. **Run times using ECOSPEED are substantially longer.
Model Features
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    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

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    STIHL Electric Motor
    Lightweight and compact, STIHL electric motors require minimal maintenance and feature low noise levels and reduced vibration.
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    Hanging Loop
    Hang your cordless trimmer securely on a wall to save space using the loop in the handle housing.

    See it in action!
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    Retaining Latch
    All STIHL Battery powered products feature a retaining latch that is designed to prevent the unit from unintentional starts when the battery is inserted.

    See it in action!
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    Loop Handle
    A thumb screw allows the ergonomic loop handle to be easily adjusted to the desired position without tools.
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    Cutting Heads & Blades Selection Chart
    Need help selecting a cutting head or blade for your STIHL trimmer or brushcutter?

    Click here to view the Cutting Heads & Blades Selection Chart (PDF Format).
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    Rubberized Soft Touch Handle 
    Soft rubber texture is both easy to grip and makes the product comfortable to hold for extended periods.  

Important Information
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 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.
Click to view the STIHL Limited Warranty Time Periods
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    View Our Usage Chart
  • Quiet Line™ Zoom
    Quiet Line™
    STIHL uses a custom blend of polymers to produce a trimmer line with the best all-around characteristics of abrasion resistance, flexibility over time and temperature ranges, and welding resistance. Quiet Line™ is available in .080” and .095” diameters and comes color-coded so that the diameter can be easily determined.

    Click here to view Cutting Heads & Blades Selection Chart (PDF) 

    Trimmer Line and Accessories Chart (PDF) 


    Available in a variety of sizes and configurations.
For Your Safety
  • STIHL Landscaper Series™ Gloves Zoom
    STIHL Landscaper Series™ Gloves
    Exclusive deerhide leather provides fantastic wear properties and excellent sense of touch and feel. Naturally soft leather provides all-day working comfort. Sizes available S, M, L, XL.
  • Deputy Glasses Zoom
    Deputy Glasses

    Tough protection that also looks the part. The STIHL Deputy Glasses meet ANSI standard Z87.1+ and feature both protection and style. The lenses are a scratch-resistant polycarbonate that block out 99% of the sun’s harmful UV rays. They are also comfortable to wear, featuring a soft rubber nosepiece and dual-mold rubber temples that helps to keep the glasses in place when the head is in motion. Stop by our Dealership to check out these and other great protective eyewear styles. Shown in Brown Frame / Brown Mirror Lens. Available lens colors (Black Frame): Blue Mirror, Smoke (Brown Frame): Brown Mirror


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FSA 90 R is rated 4.0 out of 5 by 18.
Rated 5 out of 5 by from Great option to replace gas trimmer We bought this trimmer to replace our gas one as we are not strong enough to easily get our gas trimmer started and keeping it going. The STIHL trimmer is extremely reliable, easy to use, and cuts the same level of weeds that our gas one did. It is lighter to carry which is a plus for us. I can cut for a good hour on a single battery, but I suggest getting a second one, even though the charger works quickly. The engine doesn't get hot like our gas trimmer and the lack of fumes is great for the environment. We love this trimmer and will not go back to gas!
Date published: 2018-10-01
Rated 1 out of 5 by from This product is not worth the money. Do not buy. The machine does not even trim half of my beds.
Date published: 2018-09-07
Rated 1 out of 5 by from product broke after 1 use 10 days old been at repair for 5days It's sad to pay that much money for a product that breaks after one use only ten days old it should be replaced not repaired and we would like to use it before the summer is over. No word from the dealer so far except there is a lot of things ahead of yours to repair Does not say much for your products.
Date published: 2018-07-24
Rated 5 out of 5 by from Light-weight solution My husband has a huge gas-powered trimmer. This one is mine! While he does the brush, I do the rest. It takes me about an hour to do all the trimming for our 300 x 200 foot lot. Because it is so light-weight, I enjoy walking around the yard and garden using it. We bought the best battery available, and it holds a charge for several hours of use. My only issue is restringing the line when it breaks. As with every other weed trimmer, keeping the string in place while reloading can be a challenge.. I use it as an excuse to take a break.
Date published: 2018-07-06
Rated 5 out of 5 by from Quiet, Powerful with long lasting battery This 2 string trimmer is powerful and has a battery that lasts about 1/2 hour of work.
Date published: 2018-07-03
Rated 3 out of 5 by from Battery is a bear to remove for charging. A heavy tool. CONS : a. Battery b. Weight & Balance c. String and head3 stars because the battery is next to impossible to remove with bare hands. So I had to use a force multiplier device aka, tool = water pump pliers = Channeloc Brand. These opened wide enough (3") to grasp the back of the battery to yank the battery out of the poorly designed release clamps. Stihl dropped the ball in the battery release design. I put silicone grease on the tangs without success. This is the biggest complaint I've read from other reviews. A simple bail type handle on the battery or less spring tension or, or... Stihl needs to step up to the plate and fix this ongoing problem. I also have Stihl hedge shears with the same dumb design :-(.Their exist a weight/balance problem too - these tools are heavy! The included shoulder strap is a help. The solution is to buy a Stihl battery belt with shoulder harness. A user wears the battery (and weight) around ones waste. The optional shoulder harness distributes the weight. The belt can hold up to 2 batteries but I just use 1 and change it every 30 minutes or so. Stihl also sells a battery back pack. The battery back pack cost is high, approaching close to $X,XXX.XX yikes!The string is a pain... all strings are a pain. There exist options, just explore what is available.PROS: a. Stihl Brand = quality. b. Quiet. c. Long lasting battery. d. Ease of use - no 2 cycle gas/oil. e. Clean, wipes up with a damp cloth. f. Always starts. g. Does a beautiful job of trimming. h. As powerful as a gas trimmer.Final opinion; I will recommend with reservations. Stihl needs to address the cons.
Date published: 2018-06-19
Rated 5 out of 5 by from battery lasted longer then I thought great item, hard to rewind line on it. It has the power of a gas unit and much more
Date published: 2018-05-27
Rated 5 out of 5 by from Good for what it is If you have a small yard, this item is perfect. but when big jobs come up, like the monkey grass, you have to charge it multiple times.
Date published: 2018-05-04
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