Stihl FS 90 Instruction Manual
  1. Manuals
  2. Brands
  3. Stihl Manuals
  4. Grass trimmer
  5. FS 90
  6. Instruction manual

Stihl FS 90 Instruction Manual

Hide thumbs Also See for FS 90:
Table of Contents

Advertisement

Quick Links

{
STIHL FS 90
Instruction Manual

Advertisement

Table of Contents
loading

Related Manuals for Stihl FS 90

Summary of Contents for Stihl FS 90

  • Page 1 STIHL FS 90 Instruction Manual...

  • Page 3: Table Of Contents

    Maintaining the Mowing Head Inspections and Maintenance by Dealer Maintenance and Care Minimize Wear and Avoid Damage This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process with electronic systems. FS 90, FS 90 R...

  • Page 4: Guide To Using This Manual

    When the power tool is not in use, shut it off so that it does not endanger others. 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 90, FS 90 R...
  • 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 English STIHL offers a comprehensive range of Transporting by vehicle: Properly secure Before Starting personal protective clothing and your power tool to prevent turnover, fuel equipment. spillage and damage. Check that your power tool is properly assembled and in good condition – refer...
  • 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 90, FS 90 R...
  • 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 90, FS 90 R...
  • Page 9 Do not continue using or attempt to Clean grass and plant residue off the STIHL recommends the use of original repair damaged or cracked cutting cutting attachment mounting at regular STIHL metal cutting attachments. They attachments by welding, straightening or intervals –...
  • 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 STIHL FixCut Harness / Strap Check the wear limit marks! The harness is included in the scope of supply or available as a special accessory. FS 90, FS 90 R...
  • Page 12 WARNING mowing head. Install a new one. There Improper use may damage the grass is otherwise a risk of injury from thrown cutting blade – risk of injury from thrown parts of the head. parts. FS 90, FS 90 R...
  • Page 13 Suitable for cutting shrubs and trees with STIHL recommends that you use the a maximum stem diameter of 4 cm. non-shaded area of the circular saw blade. Always start the cut with this area Before starting the cut, accelerate the of the blade.

  • 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 Harness/Shoulder Strap FS 90, FS 90 R...

  • Page 15: Approved Power Tool Attachments

    24 Shoulder strap must be used (230 mm dia.) 25 Full harness may be used 10 Grass cutting blade 250-40 Spezial 26 Full harness must be used (250 mm dia.) 11 Brush knife 250-3 (250 mm dia.) FS 90, FS 90 R...

  • Page 16: Mounting The Bike Handle

    Hold the lower clamp (1) and upper clamp (2) firmly together. Release the wing screw (3) – the clamps are loose once the wing screw has been released. They are pushed apart by the two springs (4 and 5). FS 90, FS 90 R...
  • Page 17 – check distance A again. Fitting the throttle cable Tighten down the wing screw firmly. NOTICE Do not kink the throttle cable or lay it in tight radii – make sure the throttle trigger moves freely. FS 90, FS 90 R...

  • Page 18: Mounting The Loop Handle

    Working position bar (2) as far as stop. Reverse the sequence described Go to "Securing the Loop Handle". above to swing the handles up and turn the handlebar counterclockwise. FS 90, FS 90 R...

  • Page 19: Adjusting The Throttle Cable

    The sleeve (9) (not fitted on all models) lockout (1) and squeeze the throttle must be between the loop handle and trigger (2) (full throttle) – this sets the control handle. the throttle cable correctly. FS 90, FS 90 R...

  • Page 20: Fitting The Carrying Ring

    Insert the screws (3) and tighten them down firmly. Insert the M6x14 screw (2). Insert the screw and tighten it down firmly. Line up the carrying ring. Tighten down the screw firmly. FS 90, FS 90 R...

  • Page 21: Mounting The Cutting Attachment

    If mounting hardware is packed with If mounting hardware is not packed with machine machine Mowing heads and metal cutting attachments may be mounted. Only mowing heads may be used which mount directly to the shaft (2). FS 90, FS 90 R...
  • Page 22 NOTICE WARNING Remove the tool used to block the shaft. Use a deflector that matches the cutting attachment – see "Mounting the Removing the Mowing Head Deflector". Block the shaft. Unscrew the mowing head clockwise. FS 90, FS 90 R...
  • Page 23 Use the combination wrench (14) to screw the mounting nut (13) on to The cutting edges of cutting the output shaft counterclockwise attachments 1, 3, 6 and 7 must point and tighten it down firmly. clockwise. FS 90, FS 90 R...

  • Page 24: Fuel

    Use only high-quality two-stroke engine STIHL MotoMix uses STIHL HP Ultra location protected from light and the sun. oil – preferably STIHL HP, HP Super or two-stroke engine oil for an extra long Fuel mix ages – only mix sufficient fuel HP Ultra, which are specially formulated engine life.

  • Page 25: Fueling

    Take care not to spill fuel while fueling requirements. and do not overfill the tank. STIHL recommends you use the STIHL filler nozzle for fuel (special accessory). Fill up with fuel. Preparations Closing the filler cap...

  • Page 26: Fitting The Harness

    (2) on the drive tube. Put on the shoulder strap (1). Adjust the length of the strap so that the carabiner (2) is about a hand’s width below your right hip. Balance the machine – see "Balancing the Machine". FS 90, FS 90 R...
  • Page 27 When the correct floating position has have been met: been reached: Adjust the carrying ring. Tighten down the screw on the Tighten the screw moderately. carrying ring firmly. Allow the unit to hang freely. Check the position obtained. FS 90, FS 90 R...

  • Page 28: Starting / Stopping The Engine

    Press the manual fuel pump stop sign (h) to STOP-0 bulb (9) at least 5 times - even when bulb is filled with fuel FS 90, FS 90 R...
  • Page 29 Remove the spark plug - see "Spark the cutting attachment should not rotate plug" when the engine is idling! NOTICE Dry the spark plug The machine is now ready for use. Do not stand or kneel on the shaft! FS 90, FS 90 R...

  • Page 30: Transporting The Unit

    Restart the engine The transport guard can be used for grass cutting blades up to 230 mm (9.1 in.) in diameter and for brush knife 250-3. If a grass cutting blade 230 is fitted: FS 90, FS 90 R...
  • Page 31 250 mm (9.8 in.) and the transport the transport guard If a circular saw blade is fitted: guard (2) for circular saw blades with a diameter of 200 mm (7.9 in.) . FS 90, FS 90 R...

  • Page 32: Operating Instructions

    Install the filter element in the filter housing and fit the cover. If the cutting attachment continues to keep rotating in idle even after Insert the screw and tighten it down adjustment, have the machine checked firmly. by a servicing dealer. FS 90, FS 90 R...

  • Page 33: Spark Plug

    Fit a new spark plug after about 100 operating hours – or sooner if the electrodes are badly eroded. Install only suppressed spark plugs of the type approved by STIHL – see "Specifications". Clean dirty spark plug. Check electrode gap (A) and Removing the spark plug readjust if necessary –...

  • Page 34: Engine Running Behavior

    – out of the reach of NOTICE children and other unauthorized persons. Do not completely fill the gearbox with grease. Remove the tube of grease (2). Refit the filler plug (1) and tighten it down firmly. FS 90, FS 90 R...

  • Page 35: Sharpening Metal Cutting Blades

    Resharpen with a grinder or have balanced as necessary – STIHL the work done by a dealer – STIHL recommends a STIHL servicing recommends a STIHL servicing dealer.
  • Page 36 Pull the spool up – rotate it about 1/6 turn counterclockwise until it The thermoplastic cutting blades are engages – and allow it to spring referred to as "blades" in the following. back. Pull ends of the lines outward. FS 90, FS 90 R...

  • Page 37: Inspections And Maintenance By Dealer

    Fuel Pickup Body in Tank Check the pickup body in the fuel tank every year and have it replaced if necessary. The pickup body should be positioned in the area of the tank shown in the illustration. FS 90, FS 90 R...

  • Page 38: Maintenance And Care

    Replace after every 100 hours of operation Visual inspection Cooling air intakes Clean Have them cleaned by a servicing dealer Cylinder fins Check and adjust if necessary, once Valve clearance after 139 hours of operation, by servic- ing dealer FS 90, FS 90 R...
  • Page 39 Anti-vibration elements Have them replaced by a servicing dealer Visual inspection Cutting attachments Replace Check for secure fit Metal cutting attachments Sharpen Check Gear lubrication Top up Safety information label Replace STIHL recommends STIHL servicing dealers FS 90, FS 90 R...

  • Page 40: Minimize Wear And Avoid Damage

    – owner, they should be performed by a servicing dealer. Clutch – STIHL recommends that you have Filters (air, fuel) – servicing and repair work carried out Rewind starter – exclusively by an authorized STIHL FS 90, FS 90 R...

  • Page 41: Main Parts

    12 Manual fuel pump 13 Choke knob 14 Air filter cover 15 Fuel tank 16 Machine support 17 Handlebar support 18 Tommy screw 19 Loop handle 20 Barrier bar (present depending on country) Machine number FS 90, FS 90 R...

  • Page 42: Specifications

    Bosch USR 7 AC Blade Electrode gap: 0.5 mm Deflector for all mowing attachments Fuel System Skirt Metal mowing attachment All position diaphragm carburetor with integral fuel pump Fuel tank capacity: 530 cc (0.53 l) FS 90, FS 90 R...
  • Page 43 Vibration measurement a attachment hv,eq ISO 11789, 20643, 22867, 8662 FS 90 with bike handle: 104 dB(A) Overall length Handle, left FS 90 R with barrier bar: 104 dB(A) Vibration measurement a FS 90 with bike hv,eq without cutting ISO 22867 handle: 1-5 m/s ...

  • Page 44: Maintenance And Repairs

    Directives replacement parts which have been accessories and packaging to an 2006/42/EC, 2004/108/EC and approved by STIHL for this power tool or approved disposal site for environment- 2000/14/EC and has been developed are technically identical. Only use high- friendly recycling.
  • Page 45 English Done at Waiblingen, 15.08.2014 ANDREAS STIHL AG & Co. KG Thomas Elsner Director Group Product Management FS 90, FS 90 R...
  • Page 46 English FS 90, FS 90 R...
  • Page 48 0458-260-0121-D englisch www.stihl.com *04582600121D* 0458-260-0121-D...

Table of Contents