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FSA 56

FSA 56
This battery-powered trimmer bundle comes standard with battery and charger, and combines great power and lightweight portability. Batteries and chargers can be purchased separately or as a combined set with tool.

Product Description

Note: Product availability may vary by location.

Part of the STIHL Lightning Battery System™ line of products, the FSA 56 delivers STIHL performance and exceptional value. It features an adjustable shaft to fit different user heights for enhanced comfort. Its AutoCut® head feeds out new line with just a tap on the ground. And you can trim the length of five football fields on a single charge – that’s up to 0.31 miles. This STIHL AK Series battery trimmer is also just 7.3 lbs. (including battery) for easy portability and maneuverability. And when you’re done, hang it on the wall from its onboard hanging slot. The FSA 56 bundle comes standard with the AK 10 battery and AL 101 battery charger. The FSA 56 is also available as a stand-alone unit without battery and charger.

Usage claim tested and verified by an independent third-party test laboratory. Run time may vary based on battery type, charge level and capacity, model, operating style and conditions.

View Our Usage Chart

Video | Replace AutoCut® 2-2 Trimmer Head

Video | Rewind AutoCut® 2-2 Trimmer Head

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


w/o Battery 2.5 kg. (5.5 lbs.)
w/ AK 10 3.3 kg. (7.3 lbs.)
RUN TIME (w/ AK 10)
Up to 17 minutes
RUN TIME (w/ AK 20)
Up to 34 minutes
28 cm (11")
Weight without cutting attachment or guard. Batteries and chargers can be purchased separately or as a combined set with tool.

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.


FSA 56 is rated 3.4 out of 5 by 38.
Rated 4 out of 5 by from Like trimmer but line problem Liked trimmer but line life is really poor. It seems to work well near curbing and bushes. When used on a chain link fence it breaks non stop even when being as careful as possible. Have been using Shil products for years. Have always like higher quality products.My final solution was to buy multiple heads and preload them ahead of time. This keeps you working, and they can be refilled When time allows. The 8' length of line goes away too quickly. I hope this helps someone searching for a solution. Still go through a lot of line.
Date published: 2017-09-24
Rated 4 out of 5 by from Pretty good for farm work Was fed up with oil/gas unit I had and decided to give this a try. Cuts great unless I hit a thick pack of crab grass or small brush. Can get about an hour and a half of battery which is perfect for the 3 acres I use it on at a time. Will rotate 3 acres a day when doing the total 12 I have. Wish I could flip the head to edge with it also but overall pretty sound unit.
Date published: 2017-09-20
Rated 1 out of 5 by from This product is usless; embaressment to the Stihl name. Do not buy anything from Stihl with a battery power source. I have a variety of gas powered Stihl equipment that I would swear by and thought I would get a light duty trimmer to do a small residential lot. Huge mistake; this was a complete waste of money; will not cut the 1640 feet / 5 inch swath of edging as advertised (maybe 1000 feet) in thin grass and battery lasts 20 min at best. I understood I was buying a lighter duty piece of equipment; but this product is close to useless. In summary, this equipment gets a ZERO out of 5 overall (computer will only accept 1 - 5)
Date published: 2017-09-14
Rated 4 out of 5 by from Great trimmer, not gas power... but close Bought this as a replacement to an old gas powered trimmer. I got tired of getting the gas powered trimmer started. Went and bought this after getting a battery stihl blower (Replaced under similar circumstances). This unit edges the driveway and all the beds. Battery easily lasts 30 minutes, and delivers almost the same results. Could not be happier with my purchase. Plus it's a Stihl... you know they'll back the product.
Date published: 2017-09-12
Rated 3 out of 5 by from I am impressed with the power and torque, even in tall, stemmy, grass. It has good and constant power and torque across the battery drain cycle, therefore, I'm impressed with its cutting performance; even in tall stemmy, grass. The battery life is only about 20 minutes... about half the amount that I need for my small yard. Strategically, however, I purchased the battery powered blower at the same time (it performs super well), so that I can interchange batteries and extend my worktime and avoid having to wait for a recharge. Even with the battery change hassel and the added cost of buying two units, this is a much better way to go than having to mess with the gas and oil of a 2 cycle engine powered unit.One small complaint on the "ease of use", I don't like the safety switch; it is difficult to engage, perhaps its my oversized hands... Overall, I have given a medium rating, because within the first twenty minutes of use, the cutting head seized up tight. It was replaced without much inconvenience. After multiple uses with the second unit, however, I'm still cautiously optimisitc that this will continue to work well for a long time.
Date published: 2017-09-11
Rated 4 out of 5 by from Good product. I am on disability and need it to be light enough to handle and no strings to pull but still have power! It does that!
Date published: 2017-08-30
Rated 2 out of 5 by from Trimmer Line inadequate Everything about this tool is excellent except the trimmer line is inadequate. I had to remove the spool and rewind the line because it was improperly wound as it came causing the line not to feed. The line "wore out" to quickly trimming grass against cement edging even when the trimmer was used at an angle to minimize contact with the sloped sides of the cement border. I have a relatively small amount of edging to do each time I mow and I used half of the spool just to get through one trip around the yard. I had to "tap" out more line every 10 to 15 feet of use. If I find a more durable round line of the .080 inch size for the AutoCut 2-2 Mowing Head then I will change my rating. I am concerned about the durability of the AutoCut.
Date published: 2017-08-29
Rated 1 out of 5 by from FSA 56 Worked fine the first time. The second time I used it, it just quit. Took it back to dealer, expecting to get a replacement as it was purchased only a month ago. It has now been at the dealer for a week with no status report at all. They even wanted me to leave the battery for it. When I explained that I wouldn't be able to use my blower either, they didn't seem to be concerned.
Date published: 2017-08-25
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Optional Accessories

  • 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.
  • Trimmer Line
    There's high-performance STIHL trimmer line for every operating condition. 
  • Trimmer Heads & Blades
    Many trimmer heads and blades are available. Find out which ones to use with this model in this chart.  

Standard Features

  • Common Features for Trimmers
    View the features common to many STIHL trimmers.

You Will Also Need

For Your Safety


Product Instruction Manual (PDF)

Read what our customers say about STIHL Trimmers

How to Rewind the AutoCut® 2-2 Trimmer Head for the FSA 56 (Video)

Cutting Heads & Blades Selection Chart (PDF)

How to Replace the AutoCut® 2-2 Trimmer Head for the FSA 56 (PDF)

Product Safety Manual (PDF)

STIHL Limited Warranty

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