Stihl FS 240 Service Manual
  1. Manuals
  2. Brands
  3. Stihl Manuals
  4. Brush Cutter
  5. FS 240
  6. Service manual

Stihl FS 240 Service Manual

Hide thumbs Also See for FS 240:
Table of Contents

Advertisement

Quick Links

STIH)
STIHL FS 240, 260, 360, 410, 460
2011-09

Advertisement

Table of Contents
loading

Related Manuals for Stihl FS 240

Summary of Contents for Stihl FS 240

  • Page 1 STIH) STIHL FS 240, 260, 360, 410, 460 2011-09...

  • Page 2: Table Of Contents

    5.6.1 Ball bearing / the rewind spring crankcase 8 .7 Replacing Piston the rewind spring Piston rings © ANDREAS STIHL AG & Co. KG, 2011 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 3 11.9.3 Fuel tank 12.4.2 Disassembly 12.5 Gearbox for drive tube assembly 28 mm with serration 12.5.1 Removal and installation 12.5.2 Disassembly Special tools Service accessories 131 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 4: Introduction And Safety Precautions

    They must not be passed on to third parties. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 5: Safety Precautions

    Only use the machine with the shroud mounted – otherwise the rotating fan wheel poses a risk of injury and there is a risk of engine damage due to overheating. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 6: Specifications

    0.5 mm 0.5 mm 0.5 mm Gearbox Quantity of gear lubricant: Drive tube assembly 9.5 g, diameter STIHL gear lubricant for 25.4 mm/28.0 mm brushcutters FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 7: Tightening Torques

    Screw M 5x16 Muffler/ cylinder/ second screw 10.0 (2nd stage) Screw M 5x16 Muffler/ cylinder/ first screw 10.0 (3rd stage) Screw P 4x10 Switchgear/ bushing FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 8 Screwdriver speed when used in plastic material: max. 500 rpm for DG and P-type screws. Do not use an impact wrench to release or tighten screw connections. Screws with and without locking serration must not be confused. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 9: Troubleshooting

    Screws of the clutch are loose Tighten screws, replace clutch if necessary and check threaded holes on the flywheel, replace flywheel if necessary Clutch shoes worn Install new clutch FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 10: Gearbox

    Serration damaged or broken – Replace set of pinions on the drive fragments jammed side and non-drive side FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 11: Drive Tube Assembly

    Clamps are greasy or oily Clean clamps and bike handle Bike handle can no longer be Clamps are dirty Clean clamps and bike handle adjusted FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 12: Starter

    Lugs on starter cup worn Replace starter cup, check pawls, replace if necessary Anchor loop in ErgoStart spring Hook ErgoStart anchor loop to housing not hooked onto carrier carrier FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 13 (spring windings are frozen) until normal action is restored FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 14: Ignition System

    Check ignition lead/ignition module, replace ignition module if necessary. Check operation of spark plug, clean spark plug and replace if necessary. Versions with M-Tronic, carry out diagnosis FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 15: Carburetor

    ... Versions with M-Tronic Parts in carburetor or M-Tronic Carry out M-Tronic diagnosis, if wiring harness defective necessary, replace carburetor or M-Tronic wiring harness FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 16 ... Versions with M-Tronic Parts in carburetor or M-Tronic Carry out M-Tronic diagnosis, if wiring harness defective necessary, replace carburetor or M-Tronic wiring harness FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 17 – Key in flywheel has sheared off ... Versions without M-Tronic High speed screw H "too rich" Check basic carburetor setting, correct if necessary FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 18 – Fuel/air mixture too rich (flooded) the starter to clear the combustion chamber, reinsert and tighten spark plug, repeat starting procedure FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 19: Engine

    Cooling fins on cylinder are severely fouled. Starter air intake fouled Clean starter air intake FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 20: Clutch

    – Remove starter, b 8.2 : Remove the circlip (1) – Remove shroud, b 5.4 : Remove the plug (1) – Remove protective hip plate, b 11.9.3 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 21 (2) and press it on as far – Attach cable holder and short as it will go circuit wire to engine, b 6.6.2 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 22 : Orient cover (1) so that the guide groove (arrow) faces the protective tube (2) : Position cover (1) : Insert and tighten down the screws (3) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 23: Ball Bearing

    4.2 : Press the new ball bearing (1) reached fully home with press arbor (2) 1118 893 7200 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 24: Clutch

    : Remove the spark plug boot (1) – Unscrew spark plug : Remove bolts (1) SW 10 : Remove clutch (2) complete with cover washers FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 25 – Install clutch housing, b 4.1 – Reassemble remaining parts in reverse order : Position upper cover washer (1) so that the holes (arrows) match FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 26: Engine

    Parts with damaged mating surfaces must be replaced. : Remove screws (1) : Take out and examine the muffler (2), replace if necessary FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 27: Leak Testing

    – Reassemble remaining parts in remove the spark plug reverse order – Set the piston to the top dead center (this can be checked through the spark plug hole) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 28: Vacuum Test

    0.5 bar. If this pressure remains constant for at : Slide ring (2) to the left least 20 seconds, the engine – Vacuum test crankcase is airtight FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 29: Oil Seals

    – Remove the assembly sleeve Avoid damage to the crankshaft stub. : Unscrew the nut (1) : Remove the starter cup (2) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 30: Shroud

    : Tightly screw on nuts (1) – Reassemble remaining parts in reverse order : Fit the installing sleeve (1) 4119 893 4600 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 31: Cylinder

    – Remove the spacer flange, : Remove the cylinder gasket (1) b 11.7 – Remove the ignition module, b 6.2 Ignition module/control unit M-Tronic, b 6.2.1 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 32 Avoid damage to the cylinder necessary. gasket. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 33: Crankshaft

    – Cylinder gasket is secured : Position the screws (arrows) and tighten through the holes crosswise – Reassemble remaining parts in reverse order FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 34 (arrows) are not damaged There must be sufficient clearance downward so that the crankshaft can be pressed out. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 35 120 °C (250 °F) : Slide the crankcase half (1) on until the guide sleeves (2) are in as far as they will go FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 36: Ball Bearing / Crankcase

    120 °C (250 °F) – Remove crankshaft, b 5.6 The bearing (1) drops out on its own when this temperature is reached. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 37: Piston

    The assembly drift can be inserted – Examine the piston rings and through the fitted snap ring, thus replace if necessary, b 5.8 only one snap ring must be removed. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 38 : Remove the sleeve (1) – Position the piston on the rod eye 5910 893 1709 from the installing tool (2) 5910 890 2211 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 39: Piston Rings

    The snap ring (1) must be fitted so that the gap in the ring (arrow) points downwards in axial direction of the piston. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 40: Ignition System

    2. Permanently installed lead with : Remove screw (1) and pull lug for the short circuit wire lead (2) of the ignition module out of the guides (arrows) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 41 (1) – not the pair of magnetic poles "S/ N" : Position insulating element (1) so that the connection bar (2) faces the carburetor FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 42: Control Unit

    : Screw in the screw (3) and 3. Permanently installed red lead tighten with lug for the M-Tronic. – Reassemble remaining parts in reverse order FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 43: (Ignition Module) M-Tronic

    – Insert cable holder and insert M- Tronic leads in the cable holder, b 6.6.3 – Install throttle cable and short circuit wire on engine, b 6.6.3 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 44: Ignition Module

    1 cm away from the spark window (3), high-voltage connection (2), ground connection (5) and the ground terminal (1). Danger! High voltage – risk of electrocution. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 45 : Press cable holder (1) completely into the hole on the cooling fin – Plug in the spark plug boot FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 46: Flywheel

    – Reassemble remaining parts in reverse order : Turn bolt (3) clockwise until the flywheel come loose and remove flywheel – Detach puller (3) 5910 890 4503 from flywheel FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 47: Short Circuit Wire

    : Remove short circuit wire (1) : Pull throttle cable (1) out of the from the guides (arrows) mount (arrow) and unhook it from the lever (2) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 48: Installation

    : Position protective tube (1) of the throttle cable in the guide of the clutch housing so that it is aligned with the edge (arrow) of the cable holder FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 49: And Installation

    (ignition module) out of the up to the throttle cable (4) guides (arrows) : Press lug (2) into the mount with the crimped side facing the cable holder FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 50 : Pull red lead (1) and ground housing wire (2) of the M-Tronic out of the guides (arrows) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 51 : Position protective tube (1) of the throttle cable in the guide of the clutch housing so that it is aligned with the edge (arrow) of the cable holder FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 52: Installation

    (3) in the mount – crimped side must face cable holder : Starting at the lug, press both leads into the guides (arrows) as far as they will go FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 53 – Adjust throttle cable on control serrated mount (arrow) handle for loop handle, b 10.2.4 – Reassemble remaining parts in reverse order : Relieve and remove torsion spring (1) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 54: Installation

    (arrow) of the contact in the opening (arrow) – Remove throttle cable and short spring circuit wire from engine, without M-Tronic, b 6.6.2, with M-Tronic, b 6.6.3 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 55: Ground Wire

    – Install control handle for bike handle, b 10.2.1 – Adjust throttle cable on control handle for bike handle, b 10.2.4 – Reassemble remaining parts in reverse order FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 56: Troubleshooting, Ignition System

    6.4 Check ignition: with ZAT 3 or ZAT 4 (use ZAT 3 as main spark gap see TI 32.94), b 6.3 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 57 (spark plug boot and ignition module have been removed) Value: Required < 10 Ω, Replace spark plug boot and/or ignition module if necessary, b 6.4 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 58 – Look for fault in fuel or carburetor troubleshooting procedure completed system – Check engine for leaks – Check position of flywheel on crankshaft, b 5.2, b 6.5 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 59: M-Tronic

    – Remove cutting attachment, all mounting hardware for the : Connect M-Tronic test lead (1) cutting attachment and the thrust 5910 840 0903 to the diagnostic plate jack (arrow) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 60: Check Screwed And Plug Connections As Well As Switch

    Screws (1) must be tight. valve and diagnostic jack Leads (arrows) must be seated completely and firmly in the cable lugs. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 61: Checking The Start Detection Function

    (3) b 7.4 – Move choke lever to position "}" – slide control or lever for stop function on control handle is not pressed FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 62 Target value: < 10 ohms terminal socket, then reinsert and tighten FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 63: Removal And Installation

    (3) completely into the : Pull leads out of the guides (arrows) of the guides (arrows) switchgear (4) – see illustration : Remove bushing (2) with M- Tronic FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 64 (arrows) on the plug lead (2) as far as they will go into the guide that is offset by 90° (arrows) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 65 (arrow) faces the cylinder – Push plug into the mount as far as it will go : Guide bushing (1) over the choke lever (2) and position FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 66: Troubleshooting, M-Tronic

    – Check solenoid valve, attained? b 7.3.4 or carburetor, b 11.3 b 7.3.4 – Look for a fault in the fuel path, check engine for leaks, b 11 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 67: In Position

    7.3 – Look for a fault in the fuel path (inlet needle, lever, spring, membrane), check engine for leaks, b 11.4, b 5.2 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 68: Engine Speed Drops Under Load - Low Power

    – Calibrate control unit, b 7.1 Cut-off speed = 12300 rpm? – Look for a fault in the fuel Troubleshooting completed path, check engine for leaks, b 11.4, b 5.2 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 69: Ignition - No Ignition Spark

    – Check air gap between b 6.2 control unit and flywheel, b 6.2 – Test ignition system according to flow chart "Ignition system troubleshooting", b 6.7 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 70: Engine Stops Suddenly

    – Replace switchgear and/ or carburetor, b 11.3 Are target values – Check solenoid valve, attained? b 7.3.4 – Check engine for leaks, b 5.2 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 71: Cut-Off Speed Not Reached

    7.4 connections, b 7.3 – Look for a fault in the fuel path, check engine for leaks, b 11, b 5.2 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 72: Rewind Starter

    : Press new pawls into holes (arrows) and grease the pegs (1), b 14 ErgoStart – Relieve the tension of the rewind spring, b 8.4 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 73: Ergostart/Rope Rotor

    – the pawls move outward – Reassemble remaining parts in reverse order FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 74 – Reassemble remaining parts in reverse order : Fit the rope rotor (1) on the starter post so that the recess of the rope rotor engages the anchor loop FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 75: Starter Grip

    : Thread starter rope (1) into rope rotor – Secure the rope (1) with a simple overhand knot : Thread the new starter rope into the starter grip from above FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 76: Tensioning The Rewind Spring

    Pull the rope out, hold the rope rotor steady and take off one turn of the rope. – Reassemble remaining parts in reverse order FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 77 : Orient the spring housing with rewind spring in the starter cover so that the outer anchor loop (1) is positioned over the mount for the loop (arrow) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 78: Antivibration Elements

    (3) 4126 893 4900 with the 25.4 mm shaft as far as it will go : Tighten bolt (3) : Tighten bolt (1) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 79: System

    – If handlebar adjustment is stiff, insert (3) and clamp (4) disassemble clamps and guides and clean the bike handle, b 14 – Reassemble remaining parts in reverse order FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 80 (2) anitvibration spring (1) and small antivibration spring (2 : Remove the screws and antivibration springs FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 81 – the bearing plugs are seated in the serrations and can no longer twist : Insert and tighten down the screws (2) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 82 – narrow side of the support and clamping screw must face the cutting attachment FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 83: Actuating Levers

    : Remove handle molding (1) clockwise until the hook (2) rests against the surface (arrow) : Remove torsion spring (1) –The slide control may pop out FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 84: Throttle Trigger

    : Push torsion spring (1) under the throttle cable (2) : Thread throttle cable (1) into throttle trigger (2) – Turn throttle trigger by 90° counterclockwise FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 85: Slide Control

    : Slide torsion spring (1) onto the – Check throttle cable setting, post (2) so that the angled adjust if necessary, b 10.2.4 end (arrow) faces upward FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 86: Control Handle For Bike Handle

    – Examine throttle cable or short circuit wire and replace if – Reassemble remaining parts in necessary, b 6.6 reverse order – Examine actuating lever, replace if necessary, b 10.2 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 87 : Press fairing (1) with the hooks in the openings (arrows) and slide toward support (2) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 88: Throttle Trigger

    : Press nipple (1) of the throttle and torsion springs, replace if cable into the hole of the lever (2) necessary and guide it into the slot (arrow) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 89 (arrows) and hold in place : Slide torsion spring (1) onto throttle trigger and secure it with the anchor loop on the cylindrical raised part (arrow) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 90: Lever For Stop Function

    – Turn the stud counterclockwise = Throttle cable is relieved (throttle shutter opens less) : Press throttle trigger (1) as far as it will go and hold it there FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 91: Throttle Rod

    : Unhook the throttle rod (1) from the lever (2) – Reassemble remaining parts in reverse order – Check lever (2), replace if necessary, b 11.7 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 92: Fuel System

    : Press out grommet (1) in the direction of the carburetor – For versions with M-Tronic: check the plug of the diagnostic connector, replace if necessary FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 93 – To simplify installation, coat the outside of the grommet with STIHL press fluid, b 14 : Orient grommet (1) so that the cone faces the hole FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 94: Carburetor

    11.9.2 : Pry out connector (1) with fuel hose (2) : Pull bushing (1) with switchgear over the choke lever (2) and lay it aside FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 95 : Push connector (1) with fuel hose (2) into the fuel suction hose (3) so that it between the ribs (arrows) – fuel hose is secured FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 96: Leakage Test

    – Reassemble remaining parts in reverse order – Reassemble remaining parts in reverse order – Push pressure hose of the pump 0000 850 1300 onto the double connector FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 97: Repairing The Carburetor

    (arrow) stuck to the carburetor, they must be removed very carefully – Position end cover – Remove metering diaphragm with gasket : Remove cap (1) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 98: Inlet Needle

    – Reassemble remaining parts in reverse order : Fit the inlet needle (1) : Fit spring (2) in bore FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 99: Pump Diaphragm

    (arrows) match – Remove the carburetor, b 11.3 – Examine fuel strainer for contamination and damage, clean or replace if necessary : Remove screw (1) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 100: Throttle Shaft Lever

    (1) must engage the carburetor housing : Remove screw (1) notch (arrow) of lever (2) and align with the contact surface of the cam. : Remove lever (2) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 101: Choke Lever/Choke Knob

    : Push out circlip (1) lever (arrow) : Pull out lever (2) with torsion spring (arrow) – Remove torsion spring FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 102 : Press the choke knob (1) firmly onto the choke shaft until it snaps into place – spring must rest against the base (arrow) of the black lever FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 103: Adjusting Screws, Carburetor Without M-Tronic

    If the carburetor setting can no far as possible longer be adjusted, this may also be due to the adjusting screws. – Continue with the high speed screw H FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 104: With M-Tronic

    1 3/4 turns Turn low speed screw L (2) It is no longer necessary or possible 1 1/4 turns for the user to adjust these adjusting screws. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 105: User Adjustment

    To avoid problems, the following steps must be performed for all Fine adjustment of the cut-off speed settings: is not required. – Troubleshooting, b 3.6 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 106: Spacer Flange

    – Remove gasket – use a new gasket – Check spacer flange, replace if necessary – even tiny cracks can lead to impaired engine performance, b 3.6, b 3.7 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 107 : Insert and tighten down the screws (2) : Hook throttle cable (1) onto lever (2) and press it into the mount (arrow) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 108: Tank Vent

    – Replace the tank vent or tank if necessary, b 11.8 or b 11.9.3 : Push the connector (1) 0000 855 9200 into the fuel suction hose (arrow) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 109: Removal

    Always check the fuel tank and pick- up body first if problems develop in : Press grommet (1) into the fuel supply. hole (arrow) until it encloses the hole completely FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 110: Fuel Hose

    – Pull connector off of fuel hose – Remove the pickup body, b 11.9.1 : Push fuel suction hose (1) into hole (arrow) in fuel tank FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 111: Fuel Tank

    (2) so that the second connector (3) faces the hole (arrow) of the fuel suction hose – Connector must be pushed all the way into the fuel hose FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 112 – Check tank vent, replace if necessary : Insert and tighten down the screws (1) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 113: Drive Tube Assembly

    Loop handle and carrying ring must be installed, b 12.2.3, b 12.3.3. : Orient end of drive tube assembly (arrow), with stopper installed, so that it faces the engine FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 114: Drive Tube Assembly With Control Handle For Bike Handle

    : Undo the screw (1) handle (1) so that the trigger seated in the clamp as far as it interlock (2) faces up will go. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 115: Diameter Of 25.4 Mm

    If the shaft has blue tarnish on it, it must be replaced. – Check instruction label on drive tube assembly for damage and legibility, replace if necessary FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 116 If the shaft has blue tarnish on it, it must be replaced. – Reassemble parts in reverse order – Coat the drive shaft with STIHL gear lubricant for brushcutters before installation, b 14 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 117: Disassembling The Drive Tube Assembly With A Diameter Of 28 Mm

    : Push flexible liner (1) into drive tube assembly If the shaft has blue tarnish on it, it must be replaced. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 118: Loop Handle With Barrier Bar

    – Slide loop handle (2) off of drive tube assembly : Push gearbox (1) onto the end without the shakeproof washer until it rests against the drive tube assembly (2) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 119: Deflector For Gearbox With 25.4 Mm Drive Tube Assembly Diameter

    12.4.2 screw (arrow) – Reassemble remaining parts in reverse order : Unscrew the bolt (1) – Push out mount with line limiting blade FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 120: Deflector For Gearbox With 28 Mm Drive Tube Assembly Diameter

    : Insert and tighten down the screws (3) : Unscrew the screw (1) – Slide out and examine line limiting blade (2), resharpen or replace if necessary FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 121: One-Piece Carrying Ring

    : Remove throttle cable holder (1) : Position the deflector (1) on the – Install parts in reverse order gearbox : Insert and tighten down the screws (2) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 122: Disassembly

    – Removing cutting attachment – Remove gearbox, b 12.4.1 Always use new ball bearings. – Observe safety instructions when heating parts, b 1 : Remove the circlip (1) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 123 : Fit the circlip (1) : Pull spur bevel gear (1) off of the drive shaft (2) – Clean and examine all parts, replace set of pinions if necessary FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 124 (arrow) must also turn – Gearbox must turn easily – Install gearbox, b 12.4.1 : Fit the circlip (1) : Fit the circlip (1) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 125: Gearbox For Drive Tube Assembly 28 Mm With Serration

    – Degrease clamping area, b 14 : Orient gearbox (1) so that the sticker on the drive tube assembly (2) aligns with the dome on the gear housing (arrow) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 126 (2) against twisting with the locking pin. and use a suitable tool to press out the drive pinion (3) FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 127 : Remove washer (3) bearing seat – Clean and examine all parts, replace set of pinions if necessary FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 128 (4), b 14 – Use specified quantity of : Press plug (1) into the mount as lubricant, b 2.4 far as it will go FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 129 (arrow) must also turn – Gearbox must turn easily – Install gearbox, b 12.5.1 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 130: Special Tools

    Wooden assembly block 1108 893 4800 Positioning piston Press arbor 1118 893 7200 Cold forcible insertion of ignition side ball bearing FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 131 - Jaws (with profile no. 3.1) 0000 893 3706 Extracting oil seal(s) Assembly hook 5910 893 8800 Remove pick-up body Remarks: 1) Use only for releasing. FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...

  • Page 132: Service Accessories

    Sealing the crankcase Standard solvent-based Cleaning mating surfaces and the carburetor, degreasant not containing any cleaning the crankshaft stub and tapers in chlorinated or halogenated flywheel hydrocarbons FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 133 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M...
  • Page 134 englisch / english 0455 752 0123. M0,15. A12. FST. Printed in Germany...

This manual is also suitable for:

Fs 260Fs 360Fs 410Fs 460

Table of Contents