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
WEIGHT w/o Battery 2.8 kg (6.2 lbs.)
w/ AP 100 4.2 kg (9.3 lbs.)
w/ AP 300 4.5 kg (9.9 lbs.)
RUN TIME (w/ AP 300) Up to 30 minutes
RUN TIME (w/ AR 900) Up to 120 minutes*
POWER SOURCE Battery
CUTTING WIDTH 35 cm (15")
*Without battery. Battery and charger sold separately. Runtimes 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.

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    Loop Handle
    A thumb screw allows the ergonomic loop handle to be easily adjusted to the desired position without tools.

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
Optional Accessories
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    Trimmer Heads & Blades
    Many trimmer heads and blades are available. Find out which ones to use with this model in this chart.  
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    Trimmer Line
    There's high-performance STIHL trimmer line for every operating condition. 
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    Straps and Harnesses
    They distribute the load from your hands to your shoulders. They also help reduce operator fatigue and make it easier to use trimmers, brushcutters and clearing saws for extended periods.
We Also Suggest
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    AR 900 Backpack Battery
    The STIHL AR 900 backpack battery delivers exceptional run times to professional landscapers and those with large acreage. Part of the innovative STIHL battery-powered line, the AR 900 features more than 10x the capacity of the AP 80. That means up to eleven hours of run time for products like the HSA 66 hedge trimmer. The battery weighs about 15 pounds, and the comfortable shoulder straps, hip belt and chest strap distribute the weight evenly reducing operator fatigue. The operator can use the LED indicator lights to check battery charge status before starting a job. No more running out of power halfway through the job.

    View Our Usage Chart
  • AL 500 High-Speed Battery Charger Zoom
    AL 500 High-Speed Battery Charger
    Part of the STIHL Lithium-Ion Battery KombiSystem, the AL 500 delivers the fastest charging time for all STIHL Lithium-Ion batteries. Now, you can spend less time charging and complete your projects faster. The AL 500 will even charge the high-capacity AR 900 backpack battery in less than 2 hours.  Get the most out of your STIHL system – get the AL 500 high-speed charger!

    View Our Usage Chart
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 99.9% 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 7.
Rated 3 out of 5 by from Hmmmmm....Pro vs Con. Pros: 1. The grip is nice, It's definitely more comfortable than some.2. So far, of the battery powered weed whackers I've used, this has the best speed/rpm, adjuster.3. Really good runtime with the ap300 battery, about 40 minutes if you use it at half power or a combination of full, and half power. 4. Nice solid build quality, it's going to last for quite some time.Cons: 1. It's really unbalanced, I mean really unbalanced. It would be more comfortable to hold the bottom of the trimmer and just beat the grass to death. ;) Because of the heavy motor at the head of the trimmer, it creates a very unbalanced feel. You literally feel like you are carrying the engine on the head of the trimmer. Which in turn, makes it difficult to edge too. I just wish they had distributed the weight much better. I wouldn't even mind if the motor or what have you was placed at the top with the battery. Or just a more even feel would be fine with me. 2. Tangle trouble, yes when cutting thick or dense grass it will tangle and stop the motor. Which is something that could have been sorted out if they had built the space between the head and the motor differently. The only way you can kind of keep it from tangling is by just cutting very slowly at full power.In summary, this is Stihl's best shot with their commercial weed wacker line. I really hope that they improve on what the FSA 90r is. I wish I could recommend it for comerical use, but it really just is not ready for extensive use.
Date published: 2017-10-05
Rated 5 out of 5 by from Amazing power Would have filled up twice before the battery died. Took out black berries no problem. Fast recharge was done before i finished mowing the yard. Cant find enough to trim.
Date published: 2017-08-01
Rated 5 out of 5 by from FANTASTIC - particularly if you don't like to have to start gas trimmers I always have a problem pulling the starters on gas engines. This starts all the time, easily. and if I have to stop for a few seconds to pull something out of the way or clip something it stops as soon as I release the trigger and starts as soon as I press it. couldn't be more convenient,. Once you learn how to fill it with cord (see the Utube video) it is a snap. It doesn't go a long time on one charge but I have a fast charger and I don't mind taking a break every 1 1/2 hours for 1/2 an hour. Good time for coffee.Thank you,.
Date published: 2017-06-15
Rated 4 out of 5 by from Professional level tool This trimmer will tackle most any reasonable trimmer job. It's heavier than the cheap tools, and that is because of a better motor and battery. The weight is offset by a shoulder sling. Two issues: the most common one is the auto line advance does not work well, causing delays and re-adjusting line feed. At this price, I didn't expect to have this problem. The other issue is the battery got stuck. That should never happen. It seems the product design folks at Stihl need to fix this. I still think its a good tool.
Date published: 2017-06-07
Rated 5 out of 5 by from Awesome tool This is the sixth Stihl Power tool that I have purchased and I find it to be an amazing piece of equipment. I am not easily impressed, but the ease-of-use and power this trimmer has is nothing short of amazing. It is almost overkill for just trimming grass around the house, but if you have a lot of work or high grass and weeds to trim, then this is your tool. Not pictured is the shoulder strap which is very useful when cutting for long periods of time, and it also comes to safety glasses. If you're cutting anything higher than normal grass then you need to use a safety glasses, because this thing really tears up tall grasses when you grab full throttle. The electric motor has a tremendous amount of torque which is noticeable when the grass is tall, which can bog down some gas trimmers. In fact, this has so much power its hard to believe this is an electric trimmer. In the end I would definitely buy this again.Well done Stihl.
Date published: 2016-05-18
Rated 1 out of 5 by from Never again. Started to corrode after 4 months. Replaced multiple parts at the store I purchased from but continued to have problems. Now its a paperweight in the shed.
Date published: 2016-05-10
Rated 5 out of 5 by from It almost feels like you are cheating. Light, powerful and easy. If you like noise, smell of gas fumes, and soreness by repeatedly pulling the cord, this might not be the best option for you. You just unlock, press the trigger and go. Only drawback is the amount of time to drain the battery in heavy grass etc. For large properties with option for hours of weedwacking I would suggest 2 batteries and the faster recharger.
Date published: 2016-03-04
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