FS-KM Brushcutter with 4 Tooth Grass Blade - $94.95 DSRP

Distributor Suggested Retail Price
FS-KM Brushcutter with 4 Tooth Grass Blade

DSRP: $94.95


Reserve with STIHL Express for In-Store Pick Up

This STIHL KombiSystem brushcutter attachment features a 4-tooth blade for weeds and tough grass.

Used for mowing heavy grass and weeds. Not for trimming around obstacles.

NOTE: STIHL KombiMotors and STIHL KombiSystem attachments are sold separately.

Print Spec Sheets
FS-KM Brushcutter with 4 Tooth Grass Blade Specifications
WEIGHT 1.2 kg (2.6 lbs.)*
*Without cutting tool, without deflector
Important Information
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
We Also Suggest
  • HP Ultra 2-Cycle Engine Oil Zoom
    HP Ultra 2-Cycle Engine Oil
    HP Ultra is a fully synthetic 2-cycle engine oil specially suited for high performance chainsaws and power tools. This oil has outstanding engine cleaning characteristics, plus “ultra” superior lubricating qualities in comparison to other 2-cycle engine oils. It is ideal for use in STIHL 4-MIX® engines. This oil is biodegradable, degrading by 80% in 21 days.

    •2.6 oz. bottle makes 1 gallon mix

    •5.2 oz. bottle makes 2 gallon mix

    •6.4 oz. bottle makes 2 1/2 gallon mix

    •12.8 oz. bottle makes 5 gallon mix

    STIHL recommends a mix of 50:1 high-quality 89 octane or higher unleaded gasoline to STIHL engine oil. This same mix ratio should be used during break-in.

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.

Are You Ready for a STIHL?

FS-KM Brushcutter with 4 Tooth Grass Blade is rated 4.6 out of 5 by 21.
Rated 4 out of 5 by from Great addition to my KombiSystem set of Tools Great deal to purchase as a whole new attachment, it comes with the 4 tooth grass blade, grass guard and a cover to protect the blade. I now have the FS-KM Line Head Trimmer, FS-KM Brushcutter with circular saw Scratcher Tooth Blade and this FS-KM Brushcutter with 4 Tooth Grass Blade. With a quick change I can now use the right tool to cut grass/weeds/sm bushes that grow near the canal behind my house.The only reason I rated it a 4 was that I needed to sharpen the blade after my first use as it was pushing some of the grass and not cutting it
Date published: 2018-08-28
Rated 5 out of 5 by from Cutting blackberries and Scotch Broom When I purchased this attachment I also bought the wicked brush cutter blade, then started in on inch thick Scotch Broom trunks as well as monster blackberry stalks. It not only buzzed thru them it also easily cut the remnants into manageable chunks. This is well served for the exact purpose I bought it for.
Date published: 2018-08-21
Rated 5 out of 5 by from Small brush and saplings beware I was always a skeptic when it came to combination tools - I felt like you were giving up performance for the convenience of cost and space savings. Well STIHL made a believer out of me and proved you can have the best of both worlds. I have the KM 94 R powerhead and 5 attachments, including the FS-KM Brushcutter I am reviewing here.I have not experienced any vibration issues mentioned by other reviewers and believe it would simply be a blade installation issue - when you consider the blade weight combined with the high RPMs, balance is critical. Fortunately STIHL makes it easy to disassemble and align it again. I would recommend having your local dealer do it with you to ensure proper balance.I've been using this brushcutter for about 4 months now to help maintain 12 acres, specifically the areas where a mower or brush hog can't access. I haven't used the shoulder strap that comes with it, but instead went with the STIHL forestry vest to help distribute the weight across both shoulders. With the vest, I can go hours without fatigue and swap between the string trimmer as I go. Make sure you are wearing eye protection for any of the cutter and trimmer attachments as it can throw stuff back at you, depending on what you are cutting. Like any trimmer out there, the guard doesn't doesn't catch it all.It takes a few seconds to get to max RPMs with the cutter, but once you're moving, it does a fantastic job with vines, tree saplings, thorn bushes, etc. I use the string trimmer for smaller grasses and weeds as it is more effective and efficient, however the heavier mess is for the brushcutter and it does the job well! It's another solid purchase for me and I highly recommend it.
Date published: 2018-07-31
Rated 5 out of 5 by from Works great So far this works great. I also bought the trimmer head for cutting grass with this same unit and it works pretty good. It throws a lot of grass.
Date published: 2018-06-26
Rated 5 out of 5 by from Excellent Bought a whole set of tools and absolutely love how much I can interchange. Rather than having a multitude of different engines I only have a need for one! The quality was amazing and the salesperson at Rural King in Highland was AMAZING!Can't wait to purchase some more STIHL equpment
Date published: 2018-02-27
Rated 5 out of 5 by from Good tool that will last Cutter works well and holds up to some abuse. Cut an acre of tall weeds with little trouble. Matched with KM 94 trimmer head, its a great combo.
Date published: 2017-12-31
Rated 5 out of 5 by from Works well for cutting brush I bought this along with a bunch of other attachments for my new kombi system. I am using it with the km 111 power head. I have not experienced any vibration issues as mentioned by other reviewers. I think that is a blade installation alignment issue they are having. Anyway, I've been using this with my 111 and it has plenty of smooth power. When you get the shoulder strap adjusted correctly it swings effortlessly and cuts through the pricker-filled brush I have been clearing. I used to own a professional dedicated brush cutter by another brand. I accidentally ran it over with my diesel tractor. I didn't think this unit could match that dedicated unit but I was wrong. It's a great product and I am very pleased with it. My shed is starting to look like a Stihl showroom. But Stihl has earned it through Excellent and reliable products and service. A solid purchase.
Date published: 2017-11-10
Rated 5 out of 5 by from After re-centering blade to eliminate bad wobble vibration it's great I have several attachments for the kombi-system. I found myself with a brush problem and decided to give this fs-km (4-blade) attachment a try. I thought it was a little bit pricey, especially when you buy an actual brush cutting blade, but it was well worth it after resolving my horrendous vibration/wobble when I first started it up.My attachment came from ACE Hardware Dealer pre-assembled with a separate zip lock baggie containing the manual, a wrench, screwdriver, and eye protection glasses. When I got it home I read through the manual like a good boy and discovered that the brush cutter blade is actually NOT what comes on this baby. The 4-blade cutter is for grasses and twiggy weeds. The actual brush cutter, the one that gets through the nasty brush, is actually called a brush knife and it costs and extra $34.00! Ugh. You'll know it when you see it, it's a wicked looking three blade affair that a giant ninja might throw at an enemy. Though I bought the actual brush knife, I decided to test out the 4 edge blade that comes stock with the FS-KM. When I first started the trimmer, I had this awful vibration as soon as I gave it a little gas. I mean it was awful. Something was wrong. It turns out that the blade was installed off-center. Once I loosened up the main nut using the included tools, it was a piece of cake to recenter the blade properly and retighten. Now, after starting up the machine, the operation was smooth as silk - NO Vibration - well, other than what you normally feel while using the thing for an hour!With the unit running properly, I headed straight for some monkey grass and some sizable weeds. The grass blade that came with it performed beautifully and made short work of these plants the give my string trimmer fits. Nice addition. Just for grins I did hit a few 3/8-1/2 in stalky young saplings and Yaupon and it did okay with good higher rpm and firm sweep to the left. I ran a full tank of fuel cutting and clearing with the FS-KM and the stock 4-edge blade. It worked much better than I imagined. I cannot understand why I didn't get one of these suckers years ago. 1/2 the time to clear vs string trimmer. I will say, that you want to be sure to make this the last thing you plan to do for the day because your arms will be useless noodles afterward if your experience is the same as mine. I need both hands to avoid spilling my drink!The blades are reversible when they get dull, and you can sharpen them too.Can't wait to try the actual brush knife now! ;)
Date published: 2017-05-02
  • y_2018, m_9, d_18, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_21
  • loc_en_US, sid_fsgrass, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_stihl