Stihl MS 651 Instruction Manual
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Stihl MS 651 Instruction Manual

Stihl MS 651 Instruction Manual

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MS 651
2 - 31
Instruction Manual

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Summary of Contents for Stihl MS 651

  • Page 1 MS 651 2 - 31 Instruction Manual...

  • Page 2: Table Of Contents

    STIHL expressly commit themselves to a sus‐ tainable and responsible handling of natural resources. This user manual is intended to help you use your STIHL product safely and in an environmentally friendly manner over a long service life. We thank you for your confidence in us and hope you will enjoy working with your STIHL product.
  • Page 3 3 Overview English 2 Front Hand Guard 22 Rear Handle Helps protect operator’s left hand from con‐ For operating, holding and controlling the tact with the saw chain, serves to engage the chainsaw. chain brake and activates the chain brake by 23 Throttle Trigger Lockout inertia in certain kickback situations.

  • Page 4: Safety Precautions

    Intended Use with some pacemakers. This can result in seri‐ ous or fatal injuries. The STIHL MS 651 is designed for cutting wood, ► If the user has a pacemaker: Make sure the limbing and felling trees. pacemaker is not affected.
  • Page 5 This can result – The saw chain is properly tensioned. in serious injuries. – Only original STIHL accessories designed for ► Wear long trousers with cut-retardant this chainsaw model are fitted. inserts. – The accessories are correctly attached.
  • Page 6 ► Sharpen the chain properly. regulations and environmental require‐ ► If you have any queries: Contact your ments. STIHL servicing dealer for assistance. ■ Fuel, gasoline or two-stroke engine oil can Fuel Mixture and Refueling cause irritation if they come into direct contact with the skin or eyes.
  • Page 7 ► Work calmly and carefully. ► Stop work and contact your STIHL dealer ► If light and visibility are poor: Do not use for assistance. your saw.
  • Page 8 English 4 Safety Precautions a fire in an easily combustible location. This ► If anything is unclear, consult an experi‐ can result in serious or fatal injuries and dam‐ enced expert for assistance and to deter‐ age to property. mine the appropriate felling technique. ►...
  • Page 9 4 Safety Precautions English ■ If the tree does not fall all the way to the ► Always cut with the chain running at full ground or gets caught on another tree, the speed. operator cannot finish the operation in a con‐ 4.9.2 Pull-in trolled manner.

  • Page 10: Preparing The Saw For Operation

    English 5 Preparing the Saw for Operation ► Always cut with the chain running at full serious injury to people and damage to prop‐ speed. erty. ► Shut off the engine. 4.10 Transport ► Engage the chain brake. WARNING ■ The muffler and engine may be hot after a period of operation.

  • Page 11: Assembling The Saw

    10.5. ► Check chain lubrication, 10.6. ► If you cannot carry out these steps: Do not use your chainsaw and contact your STIHL servic‐ ing dealer for assistance. Assembling the Saw Mounting and Removing the ► Fit the guide bar and chain on the saw and...

  • Page 12: Engaging And Disengaging The Chain Brake

    (1) points to mark (2). ► Now try again to close the oil tank. ► If the oil tank still cannot be closed properly: Do not use the chainsaw and contact a STIHL dealer for assistance. The chainsaw is not in a safe condition.

  • Page 13: Mixing Fuel And Refueling The Chainsaw

    STIHL recommends you use STIHL MotoMix. when the fuel tank cap is opened. The user may be seriously injured and property damage If you mix the fuel yourself, use only STIHL two- may occur. stroke engine oil or another high-performance ►...

  • Page 14: Starting And Stopping The Engine

    ► Do not top up with fuel stored for more than ► If the fuel tank still cannot be closed properly: 30 days (STIHL MotoMix: 5 years). Do not use the chainsaw and contact a STIHL ► When topping up, ensure that no fuel is spil‐ dealer for assistance.
  • Page 15 9 Starting and Stopping the Engine English ► Engage the chain brake (2). ► Depress the decompression valve (1). ► Depress the throttle trigger lockout (5) and hold it there. ► Pull the throttle trigger (4) and hold it there. ►...

  • Page 16: Checking The Saw

    ■ Do not accelerate the engine with the chain brake engaged since this can damage the chain brake. ► Disengage the chain brake before you start ► Use a STIHL gauge to check the wear marks cutting. on the sprocket. ► Disengage the chain brake.
  • Page 17 ► Move the Master Control lever to posi‐ your STIHL servicing dealer for assistance. tion ► Use a STIHL filing gauge to check that a filing The engine stops. angle of 30° has been maintained on all cut‐ ► Do not use your chainsaw and contact your ters.

  • Page 18: Operating The Saw

    English 11 Operating the Saw 11 Operating the Saw 11.1 Setting to winter mode The carburetor may ice up if the engine is oper‐ ated at temperatures below +10 °C. The shutter must be set to the winter mode so that the carbu‐ retor is additionally heated by warm air from around the engine.
  • Page 19 11 Operating the Saw English 11.4 Adjusting Carburetor for Cut‐ To increase oil feed rate ting at Temperatures Below – ► Shut off the engine and engage the chain brake. 10°C ► Turn the oil pump adjusting screw (1) clock‐ The engine will not accelerate properly if the wise.
  • Page 20 English 11 Operating the Saw 11.7 Sawing WARNING ■ If kickback occurs, the chainsaw can be thrown up in the direction of the operator. This may result in serious or fatal injury to the user. ► Always cut with the chain running at full speed.
  • Page 21 11 Operating the Saw English 11.9.3 Basic information on felling cut 1/10 Ø ► If the wood is sound and long-fibered: Observe the following points when making C Felling notch sapwood cuts: The felling notch determines the direction of – The cuts must be the same at both sides. fall.
  • Page 22 English 11 Operating the Saw ► With outstretched arms, cut through the stabi‐ lizing strap horizontally from outside at the same level as the felling cut. The tree falls. 11.9.8 Felling normal, large diameter tree A normal tree is felled with a felling cut and stabi‐ lizing strap.

  • Page 23: After Finishing Work

    12 After Finishing Work English 11.9.9 Felling a small diameter leaner ► Enlarge felling cut in direction of hinge. A leaner is felled with a felling cut and holding ► Enlarge felling cut in direction of holding strap. strap. This felling cut must be performed if the ►...

  • Page 24: Storing

    STIHL resin solvent. ► Allow chainsaw to cool down. ► Mount the bar and chain. ► Clean the saw with a damp cloth or STIHL resin solvent. 15.3 Cleaning the Air Filter ► Clean cooling air slots with a soft brush.

  • Page 25: Maintenance

    ► Push the air filter (3) into place by hand. Chain brake ► Fit the filter cover (2). ► Have the chain brake serviced by a STIHL ► Rotate the filter cover lock (1) clockwise until servicing dealer at the following intervals: you hear a click.

  • Page 26: Repairing

    Deburring the Guide Bar A burr can build up on the outer edge of the guide bar. ► Remove burr with a flat file or a STIHL guide bar dressing tool. ► If you have any queries: Contact your STIHL servicing dealer.
  • Page 27 The chain is over-ten‐ ► Tension chain properly. sioned. Bar nose sprocket is ► Clean the bar nose sprocket with STIHL resin solvent. blocked. Smoke or burning Chain is not properly ► Sharpen the chain properly. smell while cutting.

  • Page 28: Specifications

    18.4 Clearing the Combustion 19 Specifications Chamber 19.1 STIHL MS 651 Chainsaw ► Engage the chain brake. – Displacement: 91.1 cm³ – Engine power to ISO 7293: 5.0 kW (6.8 bhp) – Idle speed according to ISO 11681: 2800 ± 50 rpm –...

  • Page 29: Bar And Chain Combinations

    Sound Values and Vibration The CO value measured in the EU type appro‐ Values val procedure is specified at www.stihl.com/co2 in the product-specific technical data. – Sound pressure level L measured according to ISO 22868: 107 dB(A). The K value for the...

  • Page 30: Spare Parts And Accessories

    21 Spare Parts and Accesso‐ Improper disposal can be harmful to health and ries pollute the environment. ► Take STIHL products including packaging to a 21.1 Spare parts and accessories suitable collection point for recycling in accord‐ ance with local regulations.
  • Page 31 – Measured sound power level: 120 dB(A) – Guaranteed sound power level: 122 dB(A) Technical documents are deposited at ANDREAS STIHL AG & Co. KG Produktzulas‐ sung (Product Licensing). The year of manufacture and serial number are applied to the chainsaw.
  • Page 32 *04587840121C* 0458-784-0121-C...

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