Stihl FS 250 Instruction Manual
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Stihl FS 250 Instruction Manual

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STIHL FS 120, 120 R, 250
Instruction Manual

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Summary of Contents for Stihl FS 250

  • Page 1 STIHL FS 120, 120 R, 250 Instruction Manual...

  • Page 3: Table Of Contents

    Sharpening Metal Cutting Blades Maintaining the Mowing Head Inspection and Maintenance by User This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process with electronic systems. FS 120, FS 120 R, FS 250...

  • Page 4: Guide To Using This Manual

    Secure it against unauthorized use. Intake air: Winter operation The user is responsible for avoiding injury to third parties or damage to their property. Handle heating FS 120, FS 120 R, FS 250...
  • Page 5 Only use cutting attachments and Wear heavy-duty work accessories that are explicitly approved gloves made of durable for this power tool model by STIHL or material (e.g. leather). are technically identical. If you have any questions in this respect, consult a...
  • Page 6 To reduce the risk of seri- good condition. the engine until leak is fixed. ous burn injuries, avoid touching hot parts of the machine, including the gearbox housing. FS 120, FS 120 R, FS 250...
  • Page 7 Hold the unit / stop switch to STOP or 0. securely. The cutting attachment must be clear of the ground and all other obstructions because it may begin to run when the engine starts. FS 120, FS 120 R, FS 250...
  • Page 8 – do not run the engine Be particularly alert and cautious when unnecessarily, accelerate the engine wearing hearing protection because only when working. your ability to hear warnings (shouts, alarms, etc.) is restricted. FS 120, FS 120 R, FS 250...

  • Page 9: Clean

    The forces that occur act on and result in serious or fatal injuries. attachment. the machine, the attachment and the material being cut. FS 120, FS 120 R, FS 250...
  • Page 10 Maintenance and Repairs Use only a spark plug of the type To reduce the risk of injury, a metal approved by STIHL and make sure it is cutting attachment not manufactured by Service the machine regularly. Do not in good condition – see "Specifications".
  • Page 11 Deflector must not be used with circular saw STIHL Polycut Mowing Head with blades. Polymer Blades For mowing unobstructed edges of meadows (without posts, fences, trees or similar obstacles). FS 120, FS 120 R, FS 250...
  • Page 12 Brush Knife For cutting matted grass, wild growth and scrub and thinning young stands with a stem diameter of no more than 2 cm – do not cut thicker stems – risk of accidents. FS 120, FS 120 R, FS 250...
  • Page 13 Resharpen the blade properly in good time – dull teeth may result in the blade cracking and shattering and causing serious injury. FS 120, FS 120 R, FS 250...

  • Page 14: Approved Combinations Of Cutting Attachment, Deflector, Handle And Harness

    English Approved Combinations of Cutting Attachment, Deflector, Handle and Harness Cutting Attachment Deflector, Limit Stop Handle Shoulder Strap/Harness FS 120, FS 120 R, FS 250...

  • Page 15: Approved Power Tool Attachments

    11 Grass cutting blade 230-8 26 Shoulder strap must be used (230 mm dia.) 27 Full harness may be used 12 Grass cutting blade 250-40 Spezial 28 Full harness must be used (250 mm dia.) FS 120, FS 120 R, FS 250...

  • Page 16: Mounting The Bike Handle

    Place the clamp (7) on the handle support. Insert the screws (8) through the holes in the parts and screw them into the clamp (3) as far as stop. Line up the handlebar. Tighten down the screws firmly. FS 120, FS 120 R, FS 250...

  • Page 17: Mounting The Loop Handle

    Insert the screw (1) and tighten it down firmly. Fitting the Throttle Cable NOTICE Do not kink the throttle cable or lay it in tight radii – make sure the throttle trigger moves freely. FS 120, FS 120 R, FS 250...
  • Page 18 Go to "Securing the Loop Handle". barrier bar is fitted – lock the nuts if necessary. The sleeve (9) (not fitted on all models) must be between the loop handle and the control handle. FS 120, FS 120 R, FS 250...

  • Page 19: Adjusting The Throttle Cable

    Fit the M5x14 screw. Line up the carrying ring. Tighten down the screw firmly. Press down the trigger lockout (1) and squeeze the throttle trigger (2) (full throttle position) – this sets the throttle cable correctly. FS 120, FS 120 R, FS 250...

  • Page 20: Mounting The Deflector

    Insert the screws (7) and tighten Insert the stop pin into the hole in them down firmly. the skirt and use it to push the skirt to the left. Pull the skirt off the deflector. FS 120, FS 120 R, FS 250...

  • Page 21: Mounting The Cutting Attachment

    Pull the hose (1) off the shaft (2). Machine supplied with mounting Machine supplied without mounting hardware hardware Mowing heads and metal cutting attachments may be mounted. Only mowing heads may be used which mount directly to the shaft (2). FS 120, FS 120 R, FS 250...
  • Page 22 Removing the Mowing Head be turned over regularly to help avoid Deflector". one-sided wear. Block the shaft. The cutting edges of cutting attachments 1, 3, 6 and 7 must point Unscrew the mowing head clockwise. clockwise. FS 120, FS 120 R, FS 250...

  • Page 23: Fuel

    Use the combination wrench (14) to Use only high-quality brand-name screw the mounting nut (13) on to gasoline with a minimum octane rating the output shaft counterclockwise of 90 – leaded or unleaded. and tighten it down firmly. FS 120, FS 120 R, FS 250...
  • Page 24 Use only high-quality two-stroke engine location protected from light and the sun. oil – preferably STIHL HP, HP Super or HP Ultra, which are specially formulated Fuel mix ages – only mix sufficient fuel for use in STIHL engines.

  • Page 25: Fueling

    Take care not to spill fuel while fueling Balance the machine – see and do not overfill the tank. STIHL "Balancing the Machine". recommends you use the STIHL filler nozzle for fuel (special accessory). FS 120, FS 120 R, FS 250...
  • Page 26 To avoid damage, do not throw the unit to the ground when practicing. Practice quickly detaching the power tool from the carabiner as described under "Disconnecting Machine from Harness". FS 120, FS 120 R, FS 250...

  • Page 27: Balancing The Machine

    Tighten down the screw on the carrying ring firmly. Loosen the screw (1). Slide the carrying ring (2) along the drive tube. Tighten the screw moderately. Allow the unit to hang freely. Check the position obtained. FS 120, FS 120 R, FS 250...

  • Page 28: Starting / Stopping The Engine

    Symbol on slide control h – stop symbol and arrow. To stop the engine, push the slide control in the direction of the arrow on the stop symbol (h) to STOP-0. FS 120, FS 120 R, FS 250...
  • Page 29 WARNING NOTICE Make sure the carburetor is correctly Do not stand or kneel on the drive tube. adjusted. The cutting attachment must not rotate when the engine is idling. FS 120, FS 120 R, FS 250...

  • Page 30: Transporting The Unit

    – even if the bulb is filled with fuel. Turn the choke knob to g. Go to section on "Starting" and re- start the engine as described for a cold engine. FS 120, FS 120 R, FS 250...
  • Page 31 Fit the transport guard on the cutting attachment from below. Disconnect wire rod from the transport guard. Swing wire rod outwards. Swing wire rod into position. Hook wire rod to the transport guard. FS 120, FS 120 R, FS 250...

  • Page 32: Operating Instructions

    For longer out-of- Swing wire rod into position. service periods – see "Storing the Hook wire rod to the transport Machine". guard. FS 120, FS 120 R, FS 250...

  • Page 33: Air Filter

    – replace it if is dirty or smoothly – the cutting attachment damaged. must not rotate. Install the filter element in the filter cover. Refit the filter cover. FS 120, FS 120 R, FS 250...

  • Page 34: Spark Plug

    (LA) after every correction to the low speed screw (L). Fine Tuning for Operation at High Altitude A slight correction of the setting may be necessary if the engine does not run satisfactorily: FS 120, FS 120 R, FS 250...

  • Page 35: Engine Running Behavior

    Arcing may occur if the adapter nut (1) is loose or missing. Working in an easily combustible or explosive atmosphere may cause a fire or an explosion. This can result result in serious injuries or damage to property. FS 120, FS 120 R, FS 250...

  • Page 36: Lubricating The Gearbox

    (3) and pawl (4). necessary. WARNING The rewind spring may pop out and uncoil during this operation – take care to avoid the risk of injury. FS 120, FS 120 R, FS 250...
  • Page 37 If this is not shown and engage the pawl's peg. the case, the spring is overtensioned and could break. Take one turn of the rope off the rotor. Install the fan housing. FS 120, FS 120 R, FS 250...

  • Page 38: Storing The Machine

    The bits of the spring may still be under Resharpen with a grinder or have accordance with local tension and could fly apart when you the work done by a dealer – STIHL environmental requirements. remove the rope rotor and spring recommends a STIHL servicing housing.

  • Page 39: Maintaining The Mowing Head

    Pull the spool up – rotate it about 1/6 turn counterclockwise until it If necessary, remove the mowing engages – and allow it to spring head. back. Pull ends of the lines outward. FS 120, FS 120 R, FS 250...

  • Page 40: Inspection And Maintenance By User

    WARNING Place the pickup body in the tank. If there are signs of serious wear, replace the complete mowing head. The thermoplastic cutting blades are referred to as "blades" in the following. FS 120, FS 120 R, FS 250...

  • Page 41: Fs 120, Fs 120 R, Fs

    Antivibration Element A vibration-absorbing rubber element is installed between the powerhead and the drive tube. Have it checked if there are signs of wear or a noticeable increase in vibration levels. FS 120, FS 120 R, FS 250...

  • Page 42: Maintenance And Care

    Exhaust port (FS 250 only) first 139 hours of operation, then every 150 hours of operation All accessible screws and nuts (not adjust- Retighten ing screws) Check Anti-vibration elements Have replaced by servicing dealer FS 120, FS 120 R, FS 250...

  • Page 43: Replace

    Check tightness Metal cutting attachment Sharpen Check Gearbox lubrication (with screw plug) Replenish Safety labels Replace STIHL recommends an authorized STIHL servicing dealer. see chapter "Inspections and Maintenance by Dealer", section "Antivibration Elements" FS 120, FS 120 R, FS 250...

  • Page 44: Minimize Wear And Avoid Damage

    Clutch – STIHL recommends that you have Filters (air, fuel) – servicing and repair work carried out Rewind starter – exclusively by an authorized STIHL FS 120, FS 120 R, FS 250...

  • Page 45: Main Parts

    11 Throttle cable retainer 12 Carrying ring 13 Manual fuel pump 14 Choke knob 15 Air filter cover 16 Fuel tank 17 Machine support 18 Loop handle 19 Barrier bar (country specific) Serial number FS 120, FS 120 R, FS 250...
  • Page 46 Drive tube Mowing head Deflector for mowing heads only Line limiting blade Deflector for all mowing attachments Skirt for mowing heads Metal mowing attachment Circular saw blade Limit stop for circular saw blades only FS 120, FS 120 R, FS 250...

  • Page 47: Specifications

    For information on compliance with the attachment Spark plug (resistor NGK BPMR 7 A, REACH regulation (EC) No. 1907/2006 type): Bosch WSR 6 F FS 120: 99 dB(A) see www.stihl.com/reach. Electrode gap: 0.5 mm FS 250: 100 dB(A) FS 120, FS 120 R, FS 250...

  • Page 48: Maintenance And Repairs

    FS 250: 40.2 cc approved by STIHL for this power tool or approved disposal site for environment- are technically identical. Only use high- friendly recycling. conforms to the provisions of Directives...
  • Page 49 ANDREAS STIHL AG & Co. KG Produktzulassung (Product Licensing) The year of manufacture and serial number are applied to the product. Done at Waiblingen, 08.12.2015 ANDREAS STIHL AG & Co. KG Thomas Elsner Director Product Management and Services FS 120, FS 120 R, FS 250...
  • Page 50 English FS 120, FS 120 R, FS 250...
  • Page 52 0458-250-0121-E englisch www.stihl.com *04582500121E* 0458-250-0121-E...

This manual is also suitable for:

Fs 120 rFs 120Fs-km

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