Stihl MSA 120 C Instruction Manual
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Stihl MSA 120 C Instruction Manual

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Summary of Contents for Stihl MSA 120 C

  • Page 1 STIHL MSA 120 C Instruction Manual...

  • Page 3: Table Of Contents

    English Contents 8.1 Engaging the Chain Brake ......21 Introduction ......... 3 8.2 Disengaging the Chain Brake .
  • Page 4 20.4 Chain saw filing angle......36 20.5 STIHL AK Battery ........36 20.6 Charger STIHL AL 101 .

  • Page 5: Introduction

    Local safety regulations apply. ► Read, understand and save the following documents in addition to this instruction manual: – Safety notes and precautions for STIHL AK battery. – Safety information for STIHL batteries and products with built in batteries: www.stihl.com/safety-data-sheets...

  • Page 6: Overview

    English 3 Overview 3 Chain Sprocket 3 Overview Toothed wheel that drives the chain. 4 Tensioning Gear Moves guide bar to increase or reduce chain tension. Chain Saw, Battery and Charger 5 Spiked Bumper Toothed stop for holding saw steady against wood while cutting.

  • Page 7: Symbols

    English 3 Overview 18 Trigger 1 LED glows red. Battery too hot or too cold. The trigger switches the chain saw on and off. 19 Battery Supplies power to the chain saw. 4 LEDs flash red. There is a malfunction in the 20 LEDs battery.

  • Page 8: Safety Precautions

    Observe safety notices and take the necessary precautions. Intended Use The STIHL MSA 120 C chain saw is designed for cutting Read, understand and save the instruction wood, limbing and felling small diameter trees and manual. maintaining garden trees.

  • Page 9: Clothing And Equipment

    ► If the user is operating a chain saw for the first time: ► Take off scarves and jewelery. Practice sawing round logs on a saw horse or trestle. ► If in any doubt: Contact a STIHL servicing dealer. 0458-716-0121-B...

  • Page 10: Work Area And Surroundings

    English 4 Safety Precautions ￭ The user may come into contact with the rotating saw ￭ The electric motor of the chain saw can produce sparks. chain while working. The user may be seriously injured. Sparks can cause fires and explosions in a flammable or explosive environment.

  • Page 11: Safe Condition

    ► Do not operate it in the rain or a damp – The chain is properly tensioned. location. – Only original STIHL accessories designed for this saw are fitted. – Accessories are properly mounted. ￭ The charger is not protected against all ambient –...
  • Page 12 ► Never use a damaged saw chain. – Guide bar is not damaged. ► Sharpen chain as specified. – Guide bar is not deformed. ► If in any doubt: Contact a STIHL servicing dealer. – The minimum groove depth is maintained, @ 20.3. 4.6.4 Battery –...

  • Page 13: Working

    This can result in serious injuries and metallic objects (short circuit). damage to property. ► Stop work and consult a STIHL servicing dealer. ► Do not open the charger. ￭ The chain saw may cause vibrations in operation.
  • Page 14 English 4 Safety Precautions ￭ If the moving saw chain hits a solid object, sparks may ￭ A branch may fall to the ground during limbing. The user occur. Sparks can cause fires in a flammable may trip, fall or be seriously injured. environment.

  • Page 15: Reactive Forces

    English 4 Safety Precautions Reactive Forces ￭ Obstacles in the work area and on the escape path can hinder the user. The user may trip and fall. This may result 4.8.1 Kickback in serious or fatal injuries. ► Remove all obstacles from the work area and escape path.

  • Page 16: Charging

    English 4 Safety Precautions 4.8.2 Pull-in The saw is pushed back toward the operator when the top of the bar is used for cutting. WARNING ￭ If the rotating chain makes contact with a hard object and is suddenly pinched, the saw can be abruptly pushed back toward the operator.

  • Page 17: Transporting

    English 4 Safety Precautions 4.10 Transporting ￭ During charging, an incorrect mains voltage or incorrect mains frequency may result in an overvoltage in the 4.10.1 Chain Saw charger. The charger may be damaged. WARNING ► Make sure that the mains voltage and the mains frequency of the power supply match the data on the rating plate of the charger.

  • Page 18: Cleaning, Maintenance And Repairs

    English 4 Safety Precautions 4.11.3 Charger ► Remove the battery. WARNING ￭ Children are not aware of and cannot assess the dangers of a charger. Children may sustain serious or fatal injuries. ► Engage the chain brake. ► Remove the battery. ►...

  • Page 19: Preparing The Saw For Operation

    ► If you cannot carry out this work: Do not use your chain ￭ If the saw, guide bar, saw chain, battery or charger are not saw and contact your STIHL servicing dealer. properly serviced, components may no longer function properly or safety devices may be rendered inoperative.

  • Page 20: State Of Charge

    English 7 Assembling the Saw ► Insert the plug (6) in a convenient wall outlet (7). ► If the LEDs are glowing or flashing red: Rectify faults The charger (3) runs a self test. The LED (4) glows green @ 19. for about 1 second and then red for about 1 second.
  • Page 21 English 7 Assembling the Saw ► Remove the tensioning gear (4). ► Fit the guide bar with tensioning gear and chain on the saw and check the following points: ► Take out the screw (5). – The tensioning gear (4) faces the user. ►...

  • Page 22: Tensioning The Saw Chain

    English 7 Assembling the Saw ► Rotate the wingnut clockwise until the chain sprocket – The chain fits snugly against the underside of the bar. cover is firmly seated. – The chain can still be pulled easily along the bar with ►...

  • Page 23: Engaging And Disengaging The Chain Brake

    English 8 Engaging and Disengaging the Chain Brake ► Push the hand guard away from the handlebar with your left hand. The hand guard engages with an audible click. The chain brake is engaged. Disengaging the Chain Brake ► Place the tank cap on the tank opening. ►...

  • Page 24: Removing The Battery

    ► Release the trigger and lockout button. The saw chain stops running. ► If the chain continues to run: Engage the chain brake, remove the battery and contact a STIHL servicing dealer. The chain saw is defective. 11 Testing the Chain Saw and Battery ►...

  • Page 25: Checking The Guide Bar

    11.2 Checking the Guide Bar ► Switch off the chain saw, engage the chain brake and ► Use a STIHL filing gauge (2) to check the height of the remove the battery. depth gauges (1). The STIHL filing gauge must match the ►...

  • Page 26: Testing The Chain Brake

    English 11 Testing the Chain Saw and Battery ► Use a STIHL filing gauge to check the filing angles on the Switching on cutters, @ 20.4. The STIHL filing gauge must match the ► Fit the battery. chain pitch. ► Disengage the chain brake.

  • Page 27: Operating The Saw

    English 12 Operating the Saw 12 Operating the Saw 12.1 Holding and Controlling the Chain Saw ► Engage the bumper spike and use it as a fulcrum. ► Guide the full width of the bar into the wood and reposition the bumper spike as required.

  • Page 28: Felling

    English 12 Operating the Saw 12.4.2 Preparing work area at base of tree ► Remove obstacles from work area at tree base. ► Remove growth from tree base. ► If the limb is under tension: Make the relieving cut (1) at the compression side and then perform bucking cut (2) from the tension side.
  • Page 29 English 12 Operating the Saw F Stabilizing strap The stabilizing strap supports the tree and helps prevent it from falling prematurely. The width of the stabilizing strap is 1/10 to 1/5 of the trunk diameter. G Holding strap The holding strap supports the tree and helps prevent it from falling prematurely.
  • Page 30 English 12 Operating the Saw – Wind direction and speed ► Plunge the guide bar into the felling cut until it is visible at the other side of the trunk, @ 12.4.5. – Nearby trees, if any ► Apply the spiked bumper behind the hinge and use it as a pivot.
  • Page 31 English 12 Operating the Saw ► With outstretched arms, cut through the stabilizing strap horizontally from outside at the same level as the felling cut. The tree falls. 12.4.9 Felling a small diameter leaner A leaner is felled with a felling cut and holding strap. This felling cut must be performed if the tree diameter is less than the guide bar’s length.

  • Page 32: After Finishing Work

    English 13 After Finishing Work ► With arms outstretched, cut through the holding strap from outside at a downward angle. The tree falls. 12.4.10 Felling a large diameter leaner A leaner is felled with a felling cut and holding strap. This felling cut must be performed if the tree diameter is greater than the guide bar’s length.

  • Page 33: Transporting

    – The saw is clean and dry. 15.2 Storing the Battery 14.1 Transporting the Chain Saw STIHL recommends that you store the battery with a charge ► Switch off the chain saw, engage the chain brake and between 40% and 60% (2 LEDs glow green).

  • Page 34: Cleaning

    ► Switch off the chain saw, engage the chain brake and A burr can build up on the outer edge of the guide bar. remove the battery. ► Remove burr with a flat file or a STIHL guide bar dressing ► Remove the bar and chain. tool.

  • Page 35: Chain Brake Maintenance

    ► File each cutter with a round file so that the following ► If the saw, guide bar or saw chain is damaged: Do not use points are observed: your saw, guide bar or saw chain, and contact your STIHL servicing dealer. – Round file matches the chain pitch.

  • Page 36: Troubleshooting

    ► Clean contacts in battery compartment. ► Fit the battery. ► Disengage the chain brake. ► Switch on the saw. ► If 3 LEDs continue to flash red: Contact your STIHL servicing dealer. 3 LEDs glow red Chain saw is too hot.
  • Page 37 LED flashes red. No electrical contact ► Remove the battery. charged. between charger and ► Clean contacts on charger. battery. ► Fit the battery. Malfunction in charger. ► Do not use the charger and contact your STIHL servicing dealer. 0458-716-0121-B...

  • Page 38: Specifications

    20.6 Charger STIHL AL 101 20 Specifications – Rated voltage: see rating plate – Frequency: see rating plate 20.1 STIHL MSA 120 C chain saw – Rated power: see rating plate – Approved battery: STIHL AK – Charging current: see rating plate –...

  • Page 39: Reach

    English 20 Specifications 20.8 REACH REACH is an EC regulation and stands for the Registration, Evaluation, Authorisation and Restriction of Chemical substances. For information on compliance with the REACH regulation see www.stihl.com/reach. 0458-716-0121-B...

  • Page 40: Bar And Chain Combinations

    English 21 Bar and Chain Combinations 21 Bar and Chain Combinations 21.1 STIHL MSA 120 C chain saw Pitch Drive link gauge/ Length Guide Bar Nose sprocket No. of drive links Saw chain groove width teeth 25 cm Rollomatic E Mini 71 PM3 (Type 1/4"...

  • Page 41: Spare Parts And Accessories

    23.1 Disposal of Chain Saw, Battery and Charger – Guaranteed sound power level: 97 dB(A) Contact your STIHL servicing dealer for information on Technical documents are kept at ANDREAS STIHL AG & disposal. Co. KG Produktzulassung (Product Licensing). ► Dispose of the saw, guide bar, saw chain, battery,...

  • Page 42: General Power Tool Safety Warnings

    25 General Power Tool Safety Warnings 25.3 Electrical safety The complete EC Declaration of Conformity is available from ANDREAS STIHL AG & Co. KG, Badstrasse 115, a) Power tool plugs must match the outlet. Never modify the 71336 Waiblingen, Germany.

  • Page 43: Power Tool Use And Care

    English 25 General Power Tool Safety Warnings Carrying power tools with your finger on the switch or e) Maintain power tools and accessories. Check for energising power tools that have the switch on invites misalignment or binding of moving parts, breakage of accidents.

  • Page 44: Chain Saw Safety Warnings

    English 25 General Power Tool Safety Warnings e) Do not use a battery pack or tool that is damaged or – Wear safety glasses and hearing protection. Further modified. Damaged or modified batteries may exhibit protective equipment for head, hands, legs and feet is unpredictable behaviour resulting in fire, explosion or risk recommended.
  • Page 45 English 25 General Power Tool Safety Warnings Tip contact in some cases may cause a sudden reverse reaction, kicking the guide bar up and back towards the operator. Pinching the saw chain along the top of the guide bar may push the guide bar rapidly back towards the operator.
  • Page 46 English 25 General Power Tool Safety Warnings 0458-716-0121-B...
  • Page 48 0458-716-0121-B englisch www.stihl.com *04587160121B* 0458-716-0121-B...

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