Stihl FS 38 Instruction Manual
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Stihl FS 38 Instruction Manual

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STIHL FS 38
Instruction Manual

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  • Page 1 STIHL FS 38 Instruction Manual...

  • Page 3: Table Of Contents

    English Contents Dear Customer, Guide to Using this Manual Safety Precautions and Working Thank you for choosing a quality engineered STIHL product. Techniques Approved Combinations of Cutting It has been built using modern Attachment, Deflector, Handle and production techniques and Harness comprehensive quality assurance.

  • Page 4: Guide To Using This Manual

    Engineering improvements and keep it in a safe place for future refer- ence. Non-compliance Operate decompression STIHL's philosophy is to continually with the User Manual valve improve all of its products. For this may cause serious or reason we may modify the design, even fatal injury.
  • Page 5 STIHL or trapped in wood, brush or are technically identical. If you have any moving parts of the Do not lend or rent your power tool questions in this respect, consult your machine.
  • Page 6 STOP or 0 immediately clean the machine – do not Start the engine at least 3 meters from allow your clothes to be splashed with the fueling spot, outdoors only. fuel. If that happens, change your clothes at once. FS 38...
  • Page 7 Make sure you always have good trigger. balance and secure footing. FS 38...
  • Page 8 – risk of injury! that is no longer safe to operate. In case Misuse with mowing lines that are too of doubt, contact a dealer. long reduces the working speed of the engine. The constant slipping of the FS 38...
  • Page 9 Maintenance and Repairs Use only a spark plug of the type to important components (e. g. clutch, approved by STIHL and make sure it is plastic housing parts) – e. g. due to the in good condition – see "Specifications".
  • Page 10 English Mowing Head with Nylon Lines STIHL PolyCut 6-3 Mowing Head with WARNING Polymer Blades If the wear limit marks are ignored, there is a risk of the cutting tool shattering and flying parts injuring the operator or bystanders. To reduce the risk of accidents from shattered blades, avoid contact with stones, metal and similar solid objects.

  • Page 11: Approved Combinations Of Cutting Attachment, Deflector, Handle And Harness

    For safety reasons no other combinations are permitted – risk of accidents. Harness Cutting Attachments Shoulder strap may be used Mowing heads STIHL AutoCut C 5-2 STIHL AutoCut 5-2 STIHL AutoCut C 6-2 STIHL DuroCut 5-2 STIHL PolyCut 6-3 FS 38...

  • Page 12: Mounting The Loop Handle

    Place the square nut (4) in the loop handle, Turn the handle to the vertical insert the screw (5) from the other position. side and tighten it down firmly. FS 38...

  • Page 13: Mounting The Deflector

    Insert the nut (3) in the hex recess in STIHL AutoCut 5-2 mowing head, the deflector – make sure the holes STIHL AutoCut C 5-2 mowing head line up. Pull the thrust plate (1), if fitted, off Insert the screw (4) and tighten it the shaft (2).
  • Page 14 English Blocking the Shaft STIHL AutoCut 5-2 Screw the mowing head counterclockwise on to the shaft (1) Fit the spring (1) in the mowing as far as stop. head (2). To block the shaft, insert a suitable Block the shaft.
  • Page 15 English STIHL AutoCut C 5-2 STIHL PolyCut 6-3 Slip the mowing head (2) over the shaft (5) and engage hex recess (7) Slip the mowing head (2) on to the Fit the thrust plate on the shaft. on the external hexagon (6).

  • Page 16: Fuel

    Engine Oil gasoline vapor. Unscrew the mowing head If you mix the fuel yourself, use only counterclockwise. STIHL two-stroke engine oil or another STIHL MotoMix high-performance engine oil in accordance with JASO FB, JASO FC, JASO FD, ISO-L-EGB, ISO-L-EGC or STIHL recommends the use of STIHL ISO-L-EGD.

  • Page 17: Fueling

    30 days. Exposure to light, the sun, low or high temperatures can quickly make the fuel mix unusable. STIHL MotoMix may be stored for up to 2 years without any problems. Thoroughly shake the mixture in the canister before fueling your machine.
  • Page 18 Hold the unit firmly on the ground position. with your left hand and press down – thumb under the fan housing – do not touch the throttle trigger or trigger lockout. NOTICE Do not stand or kneel on the drive tube. FS 38...
  • Page 19 If engine does not start Now start the engine. Continue cranking. Choke lever If you did not move the choke lever quickly enough to e after the engine began to fire, the engine is flooded. FS 38...

  • Page 20: Operating Instructions

    Empty the fuel tank the filter. 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 38...

  • Page 21: Adjusting The Carburetor

    English FS 38 2-MIX FS 38 Adjusting the Carburetor General Information The carburetor comes from the factory with a standard setting. This setting provides an optimum fuel-air mixture under most operating conditions. Preparations Shut off the engine. Mount the cutting attachment.

  • Page 22: Spark Plug

    Install WARNING screw (L). only suppressed spark plugs of the If the cutting attachment continues to type approved by STIHL – see Fine Tuning for Operation at High rotate when the engine is idling, have "Specifications". Altitude your machine checked and repaired by your servicing dealer.

  • Page 23: Engine Running Behavior

    Have the muffler checked for contamination (carbonization) by your servicing dealer. STIHL recommends that you have Clean dirty spark plug. servicing and repair work carried out exclusively by an authorized STIHL Check electrode gap (A) and servicing dealer.

  • Page 24: Storing The Machine

    Keep the instructions for the mowing head in a safe place. WARNING If necessary, remove the mowing To reduce the risk of injury, always shut head. off the engine before adjusting the nylon mowing line by hand. FS 38...
  • Page 25 Fit nylon line in the mowing head as "Mounting the Mowing Head". described in the instructions supplied. STIHL AutoCut C 5-2 Disassembling the mowing head and removing remaining nylon line In normal operation, the supply of nylon line in the head is used up almost completely.
  • Page 26 English Winding line onto spool STIHL AutoCut 5-2 Removing remaining nylon line Hold the mowing head steady. Use green-coded nylon line with a Rotate the spool counterclockwise diameter of 2 mm (0.08 in). until the shortest line is about 10 cm (4 in).
  • Page 27 Check that the spring is installed (see 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 38...

  • Page 28: Inspections And Maintenance By Dealer

    Have the pickup body in the fuel The mowing head is supplied with tank replaced every year. illustrated instructions for replacing the STIHL recommends that you have blades. Keep the instructions for the servicing and repair work carried out mowing head in a safe place.

  • Page 29: Maintenance And Care

    Check idle adjustment – the cutting attachment must not rotate Carburetor Adjust idle speed Adjust electrode gap Spark plug Replace after every 100 operating hours Visual inspection Cooling air inlet Clean All accessible screws and nuts (not adjust- Retighten ing screws) FS 38...
  • Page 30 The following intervals apply to normal operating conditions only. If your daily work- ing time is longer or operating conditions are difficult (very dusty work area, etc.), shorten the specified intervals accordingly. Visual inspection Cutting attachment Replace Check tightness Safety labels Replace STIHL recommends an authorized STIHL servicing dealer. FS 38...

  • Page 31: Minimize Wear And Avoid Damage

    English servicing dealer. STIHL dealers are Rewind starter – Minimize Wear and Avoid regularly given the opportunity to attend Spark plug Damage – training courses and are supplied with the necessary technical information. Observing the instructions in this manual helps reduce the risk of unnecessary If these maintenance operations are not wear and damage to the power tool.

  • Page 32: Main Parts

    Air filter cover Tank cap Tank 10 Machine support 11 Manual fuel pump 12 Carburetor adjusting screws 13 Starter grip 14 Spark plug boot 15 Muffler 16 Line limiting blade 17 Deflector 18 Mowing head 19 Drive tube Serial number FS 38...

  • Page 33: Specifications

    Engine power to 0.65 kW The measured CO value was ISO 8893: (0.9 bhp) at FS 38, FS 38 2-MIX determined on a representative engine 8,500 rpm in accordance with a standardized test Idle speed: 2,800 rpm procedure under laboratory conditions...

  • Page 34: Maintenance And Repairs

    Take the product, Displacement: 27.2 replacement parts which have been accessories and packaging to an approved by STIHL for this power tool or approved disposal site for environment- conforms to the relevant provisions of are technically identical. Only use high- friendly recycling.
  • Page 35 English The year of manufacture and serial number are applied to the product. Done at Waiblingen, 03.02.2020 ANDREAS STIHL AG & Co. KG Dr. Jürgen Hoffmann Head of Product Data, Regulations and Licensing FS 38...
  • Page 36 0458-857-0121-A englisch www.stihl.com *04588570121A* 0458-857-0121-A...

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