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FS 240

FS 240
A bike-handle trimmer ideal for challenging cutting locations, like in ditches or around ponds.

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

  • Built in the USA
    Indicates products that are built in the United States from domestic and foreign parts and components.

    More information

  • 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).
  • Bike Handle
    When used in conjunction with a harness, the bike handle allows the machine to be easily guided, enabling a smooth horizontal mowing action to cover large areas quickly and efficiently. With soft grips for increased comfort, the bike handle provides greater control and helps reduce operator fatigue.

    See it in action!
  • Shoulder Strap / Carrying System
    Using a shoulder strap or carrying system helps distribute the weight of the equipment for increased operator comfort and improved maneuverability.
  • Multi-Function Control Handle
    Having easy access to all of the controls on one comfortable handle makes it easy to complete tasks so the operator’s hand never has to leave the handle.
  • IntelliCarb™ Compensating Carburetor
    The IntelliCarb™ Compensating Carburetor measures the air pressure on the clean side of the air filter and adjusts the metering diaphragm in the carburetor. This keeps the RPM at a consistent level, even when the air filter begins to clog.
  • Tool-Free Handle Adjustment
    The central wing nut enables easy adjustment without the use of tools. For transportation and space-saving storage, the handle can be rotated 90°.
  • Purge Pump Primer
    By pressing the bulb, this small fuel pump delivers fuel to the carburetor, reducing the number of starting pulls needed after an extended break between uses.
  • Upright Translucent Fuel Tank
    Allows operator to easily check fuel level before starting work. Upright position makes it easier to refill.
  • Protected Spark Arrestor Muffler
    Has large baffles which reduce noise level and contains a screen designed to reduce the emission of sparks.
  • Protected Spark Plug
    Protected yet easy to change.
  • Simplified Starting Procedure
    To get started, simply pump the fuel primer, set the choke and pull the starter cord. The built-in stop switch allows the user to turn off the engine with a simple press of the button. When the engine is off, the throttle lock automatically returns to the “start” setting. Your power tool will be ready to be started when you’re ready to get back to work.

    See it in action!
  • Heavy-Duty Steel-On-Steel Clutch
    Centrifugal clutch is designed to reduce slippage.
  • Protected or Enclosed Control Cables
    Eliminate dangling and loose wires.
  • Air Filter Cover
    Easily removed for fast and easy filter cleaning or replacement.
  • Throttle Trigger Interlock
    Must be depressed before the trigger can be activated.
  • Start/Run/Stop Controls on Handle
  • Protected Choke Lever/Knob
    Helps prevent damage.
  • High Tech Polymer Housing
    Housings are lightweight, withstand greater impact and are corrosion-resistant.
  • Fully Lined Drive Shaft
    Provides smooth operation and less vibration.

Specifications

DISPLACEMENT
37.7 cc (2.3 cu. in.)
ENGINE POWER
1.7 kW (2.3 bhp)
WEIGHT*
6.9 kg (15.2 lbs.)
FUEL CAPACITY
750 cc (25.4 oz.)
POWER SOURCE
Gas
* Weight without cutting attachment or 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.

Reviews

FS 240 is rated 4.7 out of 5 by 27.
Rated 5 out of 5 by from Beast Mode! Need a weedeater, brush cutter, light brush hog? Look no further. Add a chipper tooth blade and this will run through saplings like grass and 3-4 inch trees with ease. Makes brush clearing a breeze. No stooping with chainsaw or hedge trimmers. If it can't be cut with this running .095 X line or blade, move to something in the MS line.
Date published: 2017-06-26
Rated 5 out of 5 by from Unstoppable and reliable In 2 years I had 4 different trimmers from 4 different manufacturers. None were very reliable and didn't stand up to rugged use. Finally I paid the price to buy a STIHL professional FS 240 trimmer. This is the best trimmer I ever owned. It starts easily and every time and has the power to cut through the toughest grass and weeds. I have a very large property and have yet to find any grass or very thick weeds that will bog down this trimmer. It has been used for 6 to 8 hours straight and I have not found anything (short of small trees and hidden rocks) that will stop this trimmer. I've had this for a year and wish I bought this years ago!
Date published: 2017-06-20
Rated 5 out of 5 by from Starts immediately, does not get bogged down by grass or weeds. This weed eater is the best I have ever owned. It starts on the first three pulls every time. i can cut grass all day with it and it does not use a lot of gas. It has a large tank so I can run it for a long time before i need to refill it. It can cut any grass, weed or brush without being bogged down or stopping. Great weed eater.
Date published: 2017-05-28
Rated 5 out of 5 by from can handle anything you throw at it I have several stihl trimmers and just got this one I have a fs85,fs250 now the new fs240 this machine outperforms the 250 nicely.Just broke it in by running four hours straight other than to refuel by trimming 5 acres of field I can't get my mower to.the grass and weeds were about 18 inches tall and you could not bog it down just wades through everything.love it
Date published: 2017-05-28
Rated 5 out of 5 by from I'm in love! I'm a 30-year old, 150 pound woman, and I love this machine! I have multiple acres covered in brush, and this trimmer cuts through most anything like butter. It is easy to start (a huge plus!), easy to use, and is powerful enough to do most the work for you. At only 15 pounds, the machine is quite manageable, but the harness sling carries the weight comfortably, and the adjustable handle bars make the fit perfect to your build. In short, super easy to use, and effective!
Date published: 2017-05-09
Rated 2 out of 5 by from Good product EXCEPT the how the shaft attaches to the head We have an inventory of dozens of these Stihl weed whackers. We have 250s (older model) and the newer 240s. We use the bike handlebar and also a commercial no-bump stationary head. The older trimmers were better in my opinion. The 240s have a design flaw. Where the shaft connects to the head is a bad design and weak material. We have 4 of the 250s which are not very old, that the head is spinning on the shaft. Pulled them apart to discover where the tightening bolt attaches to the head has snapped off, and the receiving end is now missing about 1/4 of the circumference. To get this piece off to replace it, requires taking apart the ENTIRE machine. It's a weak point in the construction with no easy access. I foresee huge repair bills for these. Very sad to say.
Date published: 2017-03-04
Rated 5 out of 5 by from Stout, reliable Get the harness set up before you begin to use the trimmer. It is not difficult but the harness may not stay in the best position during use. Could be locked down better once set.I am using the saw tooth blade mostly. Cuts as described. Removed the shroud for briars and vines. Whole lot easier.I wish it had a rotating head to get limbs that are about head high or a little higher.Weed eater works terrific. Don't blink. Using this to cut trails on a 40 acre plot that has never been cleared.
Date published: 2016-11-08
Rated 5 out of 5 by from Awesome cleaning s̶a̶w̶ trimmer! I’ve owned the FS460 for several years and its amazing around the farm. I’m in Shenandoah Valley, VA where there's lots of rocks in my hay fields, places a tractor and mower can’t go. Because of this, thistle and woody growth appear that is hard to cut. The FS460 destroys it, even cedars up to an inch in diameter, but its heavy for all day work. I bought the FS240 on a whim at my dealer and use it to cut heavy, tall grass, thistle, small autumn olive and the other woody weeds with ease using Stihl commercial square line. I soak the line overnight which makes a huge difference with line feeding. I can go all day with the FS240…its lightweight and powerful enough to get some serious work done. If you don’t need a blade, the FS240 is the clear choice. My only gripe are Stihl harnesses, which are not made for long torso/ tall people. On some terrain I have to stoop over which isn’t comfortable (I’m 6’ 2”). Given company headquarters are in Germany, where many tall people are, I would think harnesses would have a little more adjustment or trimmers could have adjustable length shafts to extend the head out a little farther. Some have said Husqvarna Pro harnesses are better due to more and thicker padding and additional adjustment that Stihl does not have. I hate to buy Husqvarna being a Stihl guy but comfort is important.
Date published: 2016-11-03
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Standard Features

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

You Will Also Need

For Your Safety

Support

How to Wind a STIHL Trimmer Head - Video
Product Instruction Manual (PDF)
Cutting Heads & Blades Selection Chart (PDF)
Download Instructions on How to Rewind Your Trimmer Head (PDF)
STIHL Limited Warranty
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