Get offers, how-to guides and more when you join the STIHL Email Community.

Sign Up

FS 311

FS 311
This rugged bike-handle trimmer is powerful, versatile and designed for all-day professional use.

Product Description

The STIHL FS 311 trimmer combines the best of all worlds – so you can better trim yours. Featuring a powerful, fuel-efficient engine, this trimmer works longer with fewer refuels compared to previous models. It includes a vertical pleated air filter for excellent air filtration and long service intervals. A simplified starting procedure helps you jump into your job faster, while its newly designed bike handles provide a comfortable grip of product while you work. The FS 311 also features the IntelliCarb™ compensating carburetor for optimal engine performance, as well as a four-point anti-vibration system for enhanced user comfort. This trimmer accepts a range of metal cutting attachments and circular saw blades that can be used with the appropriate accessory kit. This is one well-rounded performer that doesn’t skimp on the performance.

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.
  • Anti-Vibration System
    STIHL has a system for minimizing the vibration levels of handheld outdoor power equipment. The STIHL anti-vibration system helps reduce operator fatigue and provides a more comfortable working experience.
  • 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.
  • 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
36.3 cc (2.2 cu. in.)
ENGINE POWER
1.4 kW (1.9 bhp)
WEIGHT*
7.2 kg (15.9 lbs.)*
FUEL CAPACITY
710 cc (24.0 oz)
POWER SOURCE
Gas
*Without deflector and cutting attachment.

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 recommends use of fuel with no more than 10% Ethanol content. Using fuel with greater than 10% Ethanol content may cause damage to your equipment and may void your STIHL warranty. Learn More…

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 311 is rated 5.0 out of 5 by 6.
Rated 5 out of 5 by from Works good Bought brushcutter from dealer and they helped me changing head to blade, product works great, cuts thru small shrubs good
Date published: 2017-11-09
Rated 5 out of 5 by from Beast mode weed eater I bought the FS 311 to replace my FS 250 which had to be 15+ years old. The FS 311 has roughly equivalent power but weighs less and is easier to start. It will handle anything that gets in it's way...usually at half throttle. It will take down mature sage brush but the string won't last long doing that. Braided steel may be my next option.
Date published: 2017-10-18
Rated 5 out of 5 by from Best trimmer I have owned This trimmer is the easiest to start of the several I have owned over the years. This is the first Stihl trimmer I have owned, but I already own a chain saw and mini tiller made by Stihl. All of the products have been first class. For the first time, I have tried their pre mixed gas, oil, fuel stabilizer product to fuel it, and the difference in performance is phenomenal. The other great advantage is there is no strong burning oil smell usually associated with 2 stroke engines. The last one I bought was a 4 stroke made by a different company, and that was a huge mistake. It was hard to start, had little torque compared to this one, and it blew a head gasket early in the second year. I have learned my lesson, and will be sticking to Stihl products from here on out.
Date published: 2017-10-09
Rated 5 out of 5 by from Thoothpick Maker This is a review for the FS311 which is the made in America version of the FS310 all you have to do is ask your dealer for the FS311 to get the one made in America which is what I did. The trimmer is everything and more I had to order mine which took a week but boy was it worth the wait. The trimmer starts with ease and has power to turn a 300mm brush cutter blade, it comes with a three point shoulder harness that really saves the back it is balanced great with little to know vibration, coming from a standard weed eater let me tell you you will need eye and a separate face protector as this thing throws stuff at nearly light speed and will do some damage to those tender areas of your body, long paints, boots, eye and face protection are a must because if its exposed it better be tough. Keep people, animals more than 100' away at all times. This machine is great and gets the job done.
Date published: 2017-09-01
Rated 5 out of 5 by from weed whip great job!! love it. Does the job and very light!!!!
Date published: 2017-08-23
Rated 5 out of 5 by from This product has great features to land scapers Because it is easy to and any landscaper can use it to the grass and trim
Date published: 2017-07-03
  • y_2017, m_12, d_13, h_24
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.3
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_6
  • loc_en_US, sid_fs311, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_stihl

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.
  • Deflectors
    Protect yourself from flying debris while trimming. Check out our selection of deflectors and find the one that will help protect you.
  • 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

Support

Read what our customers say about STIHL Trimmers
Cutting Heads & Blades Selection Chart (PDF)
Product Instruction Manual (PDF)
Download Instructions on How to Rewind Your Trimmer Head or Sharpen Metal Blades (PDF)
Product Safety Manual (PDF)
STIHL Limited Warranty
Contact Us

Share

My Servicing Dealer