Stihl MS 291 C-Q, Instruction Manual

Page 1: ...riesgo de lesionarse como resultado de un culatazo utilice la barra de contragolpe reducido y la cadena RMC3 0 325 pulg de STIHL dependiendo de la rueda dentada usada y de otros componentes reductores de contragolpe Read and follow all safety precautions in Instruction Manual improper use can cause serious or fatal injury Lea y siga todas las precauciones de seguridad dadas en el manual de instruc...

Page 2: ...Instruction Manual 1 60 Manual de instrucciones 61 127 ...

Page 3: ...he Bar and Chain quick chain tensioner 25 Tensioning the Saw Chain quick chain tensioner 27 Checking Chain Tension 27 Fuel 28 Fueling 29 Chain Lubricant 30 Filling Chain Oil Tank 31 Checking Chain Lubrication 31 Chain Brake 32 Winter Operation 33 Starting Stopping the Engine 34 Operating Instructions 38 Taking Care of the Guide Bar 39 Shroud 39 Air Filter System 40 Cleaning the Air Filter 40 Engin...

Page 4: ...ted in three ways 1 By inertia in certain kickback situations 2 Manually via the front hand guard 3 Manually by fully releasing the rear handle including the throttle trigger and throttle trigger lockout The activating mechanism for the STIHL Quickstop Plus chain brake system is integrated in the throttle trigger lockout rear handle One of the big advantages of this system is that the saw chain is...

Page 5: ...nually improve all of its products As a result engineering changes and improvements are made from time to time Therefore some changes modifications and improvements may not be covered in this manual If the operating characteristics or the appearance of your machine differs from those described in this manual please contact your STIHL dealer for assistance Guide to Using this Manual Fuel tank fuel ...

Page 6: ...rve the following safety precautions and warnings Read the instruction manual and the safety instructions periodically Careless or improper use may cause serious or fatal injury Warning Reactive forces including kickback can be dangerous Pay special attention to the section on reactive forces Warning Do not lend or rent your power tool with out the instruction manual Be sure that anyone using it u...

Page 7: ... the vibrations transmitted to your hands Maintain a firm grip at all times but do not squeeze the handles with constant excessive pressure Take frequent breaks All the above mentioned precautions do not guarantee that you will not sustain whitefinger disease or carpal tunnel syndrome Therefore continual and regular users should closely monitor the condition of their hands and fingers If any of th...

Page 8: ...otection com plying with ANSI Z 87 1 or your applicable national standard To reduce the risk of injury to your face STIHL recommends that you also wear a face shield or face screen over your goggles or protective glasses Wear an approved safety hard hat to reduce the risk of injury to your head when there is a danger of head injuries Chain saw noise may damage your hearing Wear sound barriers ear ...

Page 9: ... If spilled and ignited by a spark or other ignition source it can cause fire and seri ous burn injury or property damage Use extreme caution when handling gasoline or fuel mix Do not smoke or bring any fire or flame near the fuel or the power tool Note that combustible fuel vapor may escape from the fuel system Warning Fuel your power tool in well ventilated areas outdoors Always shut off the eng...

Page 10: ... maintain a firm grip and properly control your power tool Starting Warning Unit vibrations can cause an improperly tightened fuel filler cap to loosen or come off and spill quantities of fuel In order to reduce the risk of fuel spillage and fire tighten the fuel filler cap by hand as securely as possible 001BA226 KN Warning Always check your power tool for proper condition and operation before st...

Page 11: ...k strong pull As soon as the engine is running immediately blip the throttle trigger which will disengage the starting throttle lock and allow the engine to settle down to idle Warning To reduce the risk of injury from chain contact and or reactive forces the Quickstop chain brake must be engaged by means of the front hand guard when starting the saw If your saw is equipped with the Quickstop Plus...

Page 12: ...ver use the saw with one hand It is more difficult for you to control reac tive forces and to prevent the bar and chain from skating or bouncing along the limb or log Even for those compact saws designed for use in confined spaces one handed operation is dan gerous because the operator may lose control Warning To reduce the risk of cut injuries keep hands and feet away from the cutting tool Never ...

Page 13: ...ns including benzene and carbon monoxide that are known to cause respiratory prob lems cancer birth defects or other reproductive harm Some of the gases e g carbon monoxide may be color less and odorless To reduce the risk of serious or fatal injury illness from inhal ing toxic fumes never run the machine indoors or in poorly ventilated locations If exhaust fumes become concentrated due to insuffi...

Page 14: ...ith a damaged or missing chain catcher Warning Inspect anti vibration elements periodi cally Replace damaged broken or excessively worn anti vibration ele ments immediately since they may result in loss of control of the saw A sponginess in the feel of the saw increased vibration or increased bot toming during normal operation may indicate damage breakage or exces sive wear Anti vibration elements...

Page 15: ...owards the operator who may suffer severe or fatal injury Kickback may occur for example when the chain near the upper quadrant of the bar nose contacts the wood or is pinched during limbing or when it is incorrectly used to begin a plunge or boring cut Warning Some STIHL power tools are equipped with a cata lytic converter which is designed to reduce the exhaust emissions of the engine by a chemi...

Page 16: ...program to test results from a kickback test machine In addition features designed to reduce kickback injuries may lose some of their effectiveness when they are no longer in their original condition especially if they have been improperly maintained Compliance with 5 11 of ANSI B 175 1 2000 does not automatically mean that in a real life kickback the bar and chain will rotate at most 45 bar and c...

Page 17: ...ns gives compliance with the computed kickback angle requirements of ANSI B 175 1 2000 001BA174 KN Warning Never operate your chain saw without a front hand guard In a kickback situation this guard helps protect your left hand and other parts of your body In addition removal of the hand guard on a saw equipped with a Quickstop chain brake will deactivate the chain brake Warning No Quickstop or oth...

Page 18: ... kickback injury New bar chain combinations may be developed after publication of this literature which will in combination with certain power heads comply with 5 11 of ANSI B 175 1 2000 Check with your STIHL dealer for such combinations Warning Reduced kickback bars and low kick back chains do not prevent kickback but they are designed to reduce the risk of kickback injury They are available from...

Page 19: ...lose control Pull in frequently occurs when the bumper spike of the saw is not held securely against the tree or limb and when the chain is not rotating at full speed before it contacts the wood To Avoid Pull in 1 Always start a cut with the chain rotating at full speed and the bumper spike in contact with the wood 2 The risk of pull in may also be reduced by using wedges to open the kerf or cut B...

Page 20: ... Warning There are a number of factors that may affect and change the intended direction of fall e g wind direction and speed lean of tree surrounding trees and obstacles sloping ground one sided limb structure wood structure decay snow load etc To reduce the risk of severe or fatal injury to yourself or oth ers look for these conditions prior to beginning the cut and be alert for a change in dire...