Stihl FS 75 Manual
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Stihl FS 75 Manual

Stihl FS 75 Manual

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Contents
Working Techniques ......................... 3
Mounting the Loop Handle ............. 14
Mounting the Deflector ................... 15
Fuel ................................................ 18
Fueling ............................................ 19
the Engine ...................................... 20
Operating Instructions .................... 22
Cleaning the Air Filter ..................... 23
Motor Management ........................ 23
Adjusting the Carburetor ................ 24
in Muffler ......................................... 26
Checking the Spark Plug ................ 26
and Rewind Spring ......................... 27
Storing the Machine ........................ 30
Replacing Nylon Line ..................... 31
Maintenance Chart ......................... 33
Parts and Controls .......................... 34
Specifications ................................. 35
Special Accessories ....................... 36
Maintenance and Repairs ............... 36
Warranty Statement ........................ 37
STIHl
FS 75
english / USA
Allow only persons who understand this
manual to operate your trimmer.
To receive maximum performance and
satisfaction from your STIHL trimmer, it
is important that you read and under-
stand the maintenance and safety
precautions, starting on page 3, before
using your trimmer.
Contact your STIHL dealer or the STIHL
distributor for your area if you do not
understand any of the instructions in this
manual.
!
Warning!
Because a trimmer is a high-speed
cutting tool some special safety pre-
cautions must be observed to reduce
the risk of personal injury.
Careless or improper use may cause
serious or even fatal injury. Make sure
your unit is equipped with the proper
deflector, handle and harness for the
type of cutting attachment being used.
Always wear proper eye protection.
STIHL's philosophy is to continually
improve all of its products. As a result,
engineering changes and improve-
ments are made from time to time. If the
operating characteristics or the appear-
ance of your trimmer differs from those
described in this manual, please contact
your STIHL dealer for information and
assistance.
1

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  • Page 1: Table Of Contents

    3, before Fueling ..........19 using your trimmer. Starting / Stopping Contact your STIHL dealer or the STIHL the Engine ........20 distributor for your area if you do not Operating Instructions ....22 understand any of the instructions in this Cleaning the Air Filter .....

  • Page 2: Guide To Using This Manual

    Engineering improvements in different ways: individual components. STIHL’s philosophy is to continually Step or procedure without direct Note or hint which is not essential improve all of its products. As a result, reference to an illustration.

  • Page 3: Safety Precautions And Working Techniques

    Most of these safety precautions and check with your doctor before operating Do not lend or rent your trimmer without warnings apply to the use of all STIHL a trimmer. the owner's manual. Be sure that any- trimmers. Different models may have one using your trimmer understands the different parts and controls.
  • Page 4 In order to reduce the risk of and side protection complying with ANSI The ignition system of the STIHL unit whitefinger disease and carpal tunnel Z 87.1 (or your applicable national produces an electromagnetic field of a syndrome, please note the following: standard).
  • Page 5 Although certain branches, brush or moving parts of the unauthorized attachments are useable for the STIHL trimmer, their use may, in unit. Wear long pants made of heavy material to protect your legs. Do not fact, be extremely dangerous.
  • Page 6 Fueling on the fuel used, the weather conditions, Transporting the trimmer Your STIHL trimmer uses an oil-gasoline and the venting system of the tank. In mixture for fuel (see the chapter on order to reduce the risk of burns and Warning! "Fuel"...
  • Page 7 Place the trimmer on firm ground or other solid surface in an To do this with this STIHL open area. Maintain a good balance and cap, raise the grip on the secure footing.
  • Page 8 Since a muffler with a catalytic converter your STIHL Servicing Dealer only. mechanism. cools down less rapidly than conven- Warning! tional mufflers, always set your trimmer...
  • Page 9 The cutting tools may be used only suspect a clogged screen, have your harm. If you are unfamiliar with the risks for the operations described in your muffler maintained by a STIHL Servicing associated with the particular dust or manual. Dealer.
  • Page 10 Warning! Never attempt to operate any trimmer with one hand. Loss of control of the trimmer resulting in serious or fatal injury may result. FS 75...
  • Page 11 Such tools may shatter at high speed section of your owner's manual. properly or if non-approved replace- and cause serious or fatal injury. ment parts were used, STIHL may If you cannot set the correct idle speed, deny warranty. have your STIHL dealer check your...
  • Page 12 Warning! Warning! your STIHL Owner's Manual should be strictly followed. Check condition of cutting tool at regular To reduce the risk of fire and burn injury, short intervals. If behavior of tool...
  • Page 13 "softer" cut with less risk of damaging tree bark etc. than with the polymer blades. However, the polymer bladed STIHL "PolyCut" produces a better cut if there are no plants along the edge of the lawn. Sharpening is not necessary and worn STIHL "PolyCut"...

  • Page 14: Mounting The Loop Handle

    Do not use the PolyCut 5-3 if one of the circular holes (1) starts to become visible or if the projecting rim (2) has worn away, since the cutting tool may otherwise shatter and flying objects could result in injury to the operator or bystanders. FS 75...

  • Page 15: Mounting The Deflector

    STIHL-“PolyCut“ Loosen the clamp screw (5). Fit the thrust plate (1) on the shaft Slide the loop handle along the drive (2) so that internal hexagon (3) tube as required. engages hexagon (4). Retighten the clamp screw. FS 75...
  • Page 16 Fit the cap (6) on the mowing head stop pin slips into positionand and screw it clockwise onto shaft as Assembling STIHL AutoCut 11-2 blocks the shaft. far as stop. Tighten it down firmly. Fit spring (1) in the spool housing (2).
  • Page 17 / USA Adjusting Nylon Line STIHL PolyCut 10-3 STIHL PolyCut 5-3 Screw the mowing head (7) Place the nut (8) in the mowing STIHL AutoCut 11-2 clockwise onto the shaft (3) as far head. Hold the rotating mowing head as stop.

  • Page 18: Fuel

    This could cause running problems or even damage the engine. For this reason it is essential that you use only name branded fuels! Use only STIHL two-stroke engine oil or equivalent branded two-stroke air- cooled engine oils with the classification TC for mixing.

  • Page 19: Fueling

    / USA Fueling Gaso- Oil (STIHL 50:1 or line equivalent branded TC oils) US gal. US fl.oz 2 1/2 12.8 Dispose empty mixing-oil canisters only at authorized disposal locations. Before fueling, clean the filler cap and Change the fuel pick up body every the area around it to ensure that no dirt year.

  • Page 20: Starting / Stopping The Engine

    Now release the throttle trigger, with fuel. slide control and throttle trigger To stop engine: interlock in that order. This is the Push slide control (3) in direction of starting throttle position. arrow to stop symbol c (7). FS 75...
  • Page 21 – your thumb should be under the fan Your power tool is ready for housing. operation. Do not stand or kneel on the drive tube! This could permanently damage the drive tube. FS 75...

  • Page 22: Operating Instructions

    Set the slide control, interlock lever screws (not adjusting screws) at regular and throttle trigger to starting throttle intervals and retighten as necessary. position. Start the engine by pulling the starter rope firmly – 10 to 20 pulls may be necessary. FS 75...

  • Page 23: Cleaning The Air Filter

    Install the foam element (3) in the Remove the foam and felt filter filter cover (2). elements. Place felt element (4) (lettering facing inward) in filter housing (5). Fit filter cover so that it snaps into position. FS 75...

  • Page 24: Adjusting The Carburetor

    It is possible that maximum engine With this carburetor it is only possibleto speed may be reached with the adjust the engine idle speed within fine standard setting in each case. limits. see “Guide to Using this Manual” FS 75...
  • Page 25 Check air filter and fit a new one if necessary. Turn low speed screw (L) counterclockwise (about 1/4 turn) Check spark arresting screen* and until the engine runs and clean or replace as necessary. accelerates smoothly. see “Guide to Using this Manual” FS 75...

  • Page 26: Spark Arresting Screen In Muffler

    If screen is damaged or coked up, fit than one half turn. a new one. Refit the spark arresting screen. see “Guide to Using this Manual” FS 75...

  • Page 27: Replacing The Starter Rope And Rewind Spring

    Remove the cable lug. electrodes are badly eroded. authorized by STIHL. Always press Lift the starter cover (2) away from spark plug boot (2) snugly onto the tank (3) and pull it out from spark plug boot (1) of the proper under the shroud (4).
  • Page 28 "Specifications") and then thread Insert screw and tighten down the rope through the top of the grip securely. and the rope bush (7). Go to "Tensioning the rewind Refit the cap in the grip. spring". see “Special Accessories“ FS 75...
  • Page 29 – spring loop and bend it to size if release the rotor – necessary. let go of rope slowly so that it winds Go to "Tensioning the rewind onto the rotor. spring". see “Special Accessories“ FS 75...

  • Page 30: Storing The Machine

    Fit the starter cover. To do this, push the upper mounting boss under the shroud – line up the tank and push lower part of cover onto the tank. Insert and tighten down the housing screws. Secure cable lug in position. FS 75...

  • Page 31: Replacing Nylon Line

    / USA Replacing Nylon Line STIHL AutoCut 11-2 Always inspect the mowing head for signs of wear before replacing the nylon line. If there are signs of severe wear, it may be necessary to replace some parts or thecomplete mowing head.
  • Page 32 (5) as the spool is pushed into position. Assembling the Mowing Head Pull out the ends of the lines as far Check that the compression spring as stop. is installed (see “Mounting the Mount the mowing head on the Mowing Head”). machine. FS 75...

  • Page 33: Maintenance Chart

    Spark arresting screen* in muffler Clean or replace All accessible screws and nuts (not adjusting Retighten screws) Anti-vibration element Have replaced by STIHL dealer Visual inspection Replace Cutting tool Check tightness of cutting tool see “Guide to Using this Manual”...

  • Page 34: Parts And Controls

    10 Fuel filler cap 11 Starter grip 12 Fuel pump 13 Choke lever 14 Carburetor adjusting screws 15 Muffler (with spark arresting screen*) 16 Deflector 17 Line limiting blade 18 Mowing head see “Guide to Using this Manual” FS 75...

  • Page 35: Specifications

    Max. engine speed: 10,500 rpm trimes over-long nylon line to the gasoline and oil. correct length. Max. speed of output shaft (cutting 18. Mowing Head tool mounting) 8,500 rpm The cutting attachment for different purposes (special accesory). Idle speed: 2,800 rpm FS 75...

  • Page 36: Special Accessories

    9,26 lb Other Special Accessories (4,2 kg) Safety glasses Shoulder strap Thrust plate STIHL ElastoStart (starter rope with grip) 0000 190 3400* 0000 190 3405* Special resin-free lubricating oil 3.4 fl.oz. (100 ml) bottle see "Guide to Using this Manual"...

  • Page 37: Stihl Incorporated Federal And California Emission Control Warranty Statement

    California. STIHL service center as soon as a designed, built and equipped to meet the In other states, 1997 and later model problem exists.
  • Page 38 (see also instruction "Fuel"). warranty card to STIHL. If any emission owner if it is determined that a warranted Deviations from this recommendation related part on your engine is defective, part is defective.

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