Stihl FS 40 Instruction Manual

Stihl FS 40 Instruction Manual

Hide thumbs Also See for FS 40:

Advertisement

STIHL FS 40, 50
Instruction Manual

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the FS 40 and is the answer not in the manual?

Questions and answers

Dave Lambie
May 28, 2025

How to add trimmer - the "string" has run out

Subscribe to Our Youtube Channel

Summary of Contents for Stihl FS 40

  • Page 1 STIHL FS 40, 50 Instruction Manual...
  • Page 3: Table Of Contents

    Disposal EC Declaration of Conformity UKCA Declaration of Conformity This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process with electronic systems. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 4: Guide To Using This Manual

    When not using the machine, it must be Intake air: Winter laid down in such a way that it does not operation endanger anyone. Ensure that the machine cannot be used without Handle heating authorization. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 5 Only use cutting attachments and accessories that are explicitly approved for this power tool model by STIHL or FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 6 Check cutting attachment for – within a radius of 15 meters of your own correct and secure assembly and position – even when starting. good condition FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 7 Watch out for obstacles: tree stumps, handed. Stop work immediately if you start roots – risk of tripping or stumbling! suffering from nausea, headaches, impaired vision (e.g. your field of vision FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 8 – risk of injury! respective To reduce the risk of injury, shut off the machine and cut- engine before replacing the cutting ting tool – risk of attachment. injury from ejected objects! FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 9 Inspect the ignition lead (insulation in Have all other work performed by a good condition, secure connection). servicing dealer. Check the condition of the muffler. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 10 Do not continue using the PolyCut 6-3 if one of the circular holes (1; arrow) becomes visible or if the projecting rim (2; arrow) has worn away. Install a new mowing head. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 11: Approved Combinations Of Cutting Attachment, Deflector, Handle And Harness

    – risk of accidents! Cutting attachments Mowing heads STIHL AutoCut C 6-2 STIHL DuroCut 5-2 STIHL PolyCut 7-3 STIHL PolyCut 6-2 Deflector Guard with blade for mowing heads FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 12: Mounting The Loop Handle

    Loosen the star knob (2) on the Insert the screw (4) with washer and handle. tighten it down firmly. All versions Turn the handle to the vertical position. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 13: Mounting The Cutting Attachment

    Keep the supplement sheet for the mowing head in a safe place. Slip the thrust plate (1) over the shaft (2) and engage the hex recess (3) on the external hexagon (4). FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 14 Nuts that move too easily must be firmly by hand. replaced. Retain the shaft Turn the mowing head clockwise NOTICE Remove the tool that was used to block the shaft. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 15: Fuel

    Use a canister approved for storing Use only high-quality brand-name fuel. Pour oil into canister first, then gasoline with a minimum octane rating add gasoline and mix thoroughly. of 90 – leaded or unleaded. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 16: Fueling

    Dispose of remaining fuel and cleaning fluid properly in accordance with local regulations and environmental requirements. Turn the cap counterclockwise until it can be removed from the tank opening. Remove the cap. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 17: Starting / Stopping The Engine

    0 position, the ignition is switched off. The ignition is switched on Press in the choke lever (5) and turn again automatically after the engine it to < at the same time. stops. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 18 Engine stalls in cold start position g or so that the starter rope can rewind under acceleration properly. Move the choke knob to < and Continue cranking until the engine continue cranking until the engine runs. runs. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 19: Operating Instructions

    Empty the fuel tank and keep the machine in a dry place, well away from sources of ignition, until you need it again. For longer out-of- service periods – see "Storing the Machine". FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 20: Adjusting The Carburetor

    This machine checked and repaired by your can result result in serious injuries or servicing dealer. damage to property. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 21: Engine Running Behavior

    Thoroughly clean the machine – pay special attention to the cylinder fins and air filter. Store the machine in a dry and secure location – out of the reach of children and other unauthorized persons. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 22: Maintaining The Mowing Head

    If necessary, remove the mowing line in the head is used up almost To reduce the risk of injury, always shut head. completely. off the engine before adjusting the nylon mowing line by hand. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 23 Push the straight end of each line through one of the sleeves (5) in the mowing head (3) until you feel a noticeable resistance – and then continue pushing as far as stop. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 24 Winding line onto spool A prewound spool (special accessory) may be used as an alternative to the following procedure. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 25 Mount the mowing head on the "Mounting the Mowing Head"). machine. Replacing Cutting Blades STIHL PolyCut Always check the mowing head for signs of wear before installing new cutting blades. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 26: Maintenance And Care

    Cooling air inlet Clean All accessible screws and nuts (not adjust- Retighten ing screws) Visual inspection Cutting attachment Replace Check tightness Safety labels Replace STIHL recommends an authorized STIHL servicing dealer. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 27: Minimize Wear And Avoid Damage

    Clutch – STIHL recommends that you have Filters (air, fuel) – servicing and repair work carried out exclusively by an authorized STIHL FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 28: Main Parts

    10 Machine support 11 Manual fuel pump 12 Fuel cap 13 Tank 14 Starter grip 15 Muffler 16 Mowing head 17 Blade (for mowing line) 18 Deflector 19 Shaft Serial number FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 29: Specifications

    10600 rpm long shaft: 1650 mm Authorisation and Restriction of Chemical substances. Ignition system For information on compliance with the REACH regulation (EC) No. 1907/2006 Electronic magneto ignition see www.stihl.com/reach. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 30: Maintenance And Repairs

    STIHL replacement parts. Original STIHL parts can be identified by the STIHL part number, the { logo and the STIHL parts symbol K (the symbol may appear alone on small parts). FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 31: Ec Declaration Of Conformity

    Directive valid on the date of production: 2000/14/EC, Annex V, and standard EN ISO 11806-1, EN 61000-6-1, ISO 10884. EN 55012. FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 32 The year of manufacture and serial number are indicated on the product. Done at Waiblingen, 15.07.2021 ANDREAS STIHL AG & Co. KG Dr. Jürgen Hoffmann Director Product Certification & Regulatory Affairs FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 33 English FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 34 English FS 40, FS 40 C, FS 50, FS 50 C...
  • Page 36 0458-546-0121-E englisch www.stihl.com *04585460121E* 0458-546-0121-E...

This manual is also suitable for:

Fs 50Fs 40 cFs 50 c

Table of Contents