FSA 45 - $129.95 DSRP SAVE $10.00 on select models


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FSA 45

DSRP: $129.95 $119.95

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An affordable string trimmer including a built-in battery and adjustable shaft length.

With its integrated battery, the FSA 45 string trimmer is a great choice for occasional use on small properties. Part of the AI Series, the FSA 45 comes standard with the STIHL PolyCut™ 2-2 mowing head, making it ideal to cut in hard-to-reach places and large areas of tall grass. This STIHL AI Series trimmer is lightweight at only 5.1 lbs. (including battery) and can trim the length of three footb...Read More
Print Spec Sheets
FSA 45 Specifications
CUTTING WIDTH 23 cm (9")
RUN TIME (w/ Integrated Battery) With STIHL PolyCut™: Up to 20 min.
With line: Up to 12 min.
WEIGHT (w/ Integrated Battery)* 2.3 kg (5.1 lbs.)
*Weight without cutting attachment or guard. Comes with integrated battery and charger.
Model Features
  • Zoom
    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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    Adjustable front handle 
    The front handle is easily adjustable (360-degree rotation) for comfort.
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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
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STIHL Dealer Days are Ending Soon!

FSA 45 is rated 2.8 out of 5 by 40.
Rated 3 out of 5 by from I feel like I feel like it’s a good machine on power wise. But the battery does not stay charged long enough to finish the job. It takes two charges to do my yard. It has good power cutting the bigger stuff like kosher weed about quarter inch thick. Any bigger it has problems. So it is good for grass and smaller plants. It’s lightweight. The blades are a little pricey for how long they last. But overall I say gets the job done. If they have a bigger charge life I believe that I would be satisfied with it. I just got it so I will see how long it lasts and how durable it is.
Date published: 2018-05-16
Rated 1 out of 5 by from Piece of Crap It's a waste of money. The battery won't last no time and it takes over 4 hours to charge it. The plastic blades are nubs in 15 minutes. I even tried using the line which is hard to put into the head and takes 10 minutes to thread into the head. I was tired of dealing with gas trimmers since the gas they use these days clogs up the carb. Get a decent gas trimmer.
Date published: 2018-05-09
Rated 5 out of 5 by from Great Trimmer I am a Stihl employee, I will try to be as unbiased as possible.I do not have a very large area of lawn, I figured that the FSA45 for my need in a trimmer. This being a fairly new product I have to say that for the price and the fact that it is battery powered, I am literally surprised at the length of battery time. I can actually complete my yard, my daughter in laws yard and still have battery left. Extremely pleased with my grass trimmer.
Date published: 2018-05-01
Rated 1 out of 5 by from Bad choice. Requires .065 line and optional plastic blades destruct readily. Have owned many trimmers and this is the absolute worst. .065 line is too lightweight for even my small residential yard. Plastic optional blades wear down almost immediately. Company would say I am using it wrong. NOT.Will be going back to gas and a different brand. Do not want to chance another of their brand .
Date published: 2018-04-12
Rated 5 out of 5 by from Very impressive After reading the reviews I was not sure this was the trimmer to buy , after going to the store and checking it out I did purchase and it is better than I had hoped , I think the problem people have with it is they treat it like a line trimmer and get to close to metal , concrete , etc , their is no line to bump out to continue on , I have a small yard but do have a concrete slab , trees , metal pipe , if you take it easy and not keep it up against the the obstacle it is a dream trimmer , I hit all the obsicalaes and the blades are fine and I love that if you do run out of blades you can put some line in and finish the job , Great trimmer
Date published: 2018-04-07
Rated 3 out of 5 by from Not in love with it I wish it had string instead of the plastic blades. The blades wear down really fast, especially if you are trimming next to a hard surface-which is most of the time. When the blades come into contact with the ground it either stops or wants to walk on you- cutting some random stripe in the yard. It's very difficult to edge with and using it like that will mow through the blades. However, the blades are super easy to change and I like the simplicity of being battery powered. Starts every time and it's pretty light. The rotating head and shaft is a nice feature that gets used.
Date published: 2017-10-18
Rated 1 out of 5 by from This product has advertised great features but does not deliver! I will be returning this trimmer tomorrow. I have a small yard and had to restring it 8 times when half done, so gave up on that. Bought larger diameter string but it snapped off after two feet. The centripital force causes the slot to act as a razor and slices the plastic string off. Then tried the plastic blades provided. Machine would shut off after 2-3- feet. Not a good investment and a surprisingly poor STIHL prodeuct. Extremely disappointed!
Date published: 2017-09-28
Rated 4 out of 5 by from The product works very well, but the battery could use a little more longevity I have a simple yard with two walkways, and about 6 bushes to trim around. The big thing is driveway edging. My driveway is about 125 feet long (250 total), and I can't do trimming and edging on one battery charge. This might be unfair because the "average" driveway isn't than long, and for those, the battery would probably make it just fine. And, it gets through all but the last 50 feet. The product is light weight, and does a good job. Overall, I'm very happy; I just need to know that I'll have to charge it again if I do both wacking and edging on the same day. No big deal.
Date published: 2017-09-14
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