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Operator′s manual
445 445e 450e
Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
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E En ng glliis sh h
1153136-26 Rev.1 2009-12-29
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KEY TO SYMBOLS Symbols on the machine: Symbols in the operator’s WARNING! Chain saws can be manual: dangerous! Careless or incorrect use can Switch off the engine before carrying result in serious or fatal injury to the out any checks or maintenance. operator or others. CAUTION! The start/stop switch Please read the operator’s manual automatically returns to run position. carefully and make sure you In order to prevent unintentional understand the instructio
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CONTENTS Contents KEY TO SYMBOLS Symbols on the machine: ...................................... 7 Symbols in the operator’s manual: ........................ 7 CONTENTS Contents ............................................................... 8 INTRODUCTION Dear Customer, ..................................................... 9 WHAT IS WHAT? What is what on the chain saw? ........................... 9 GENERAL SAFETY PRECAUTIONS Before using a new
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INTRODUCTION What is what on the chain saw? Dear Customer, 1 Cylinder cover Congratulations on your choice to buy a Husqvarna 2 Decompression valve product! Husqvarna is based on a tradition that dates back to 1689, when the Swedish King Karl XI ordered the 3 Air purge construction of a factory on the banks of the Husqvarna 4 Start reminder River, for production of muskets. The location was logical, 5 Combined start and stop switch since water power was harnesse
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GENERAL SAFETY PRECAUTIONS Before using a new chain saw WARNING! Never allow children to use or be in the vicinity of the machine. As the • Please read this manual carefully. ! machine is equipped with a spring- • (1) - (113) refer to figures on p. 2-6. loaded stop switch and can be started by • Check that the cutting equipment is correctly fitted low speed and force on the starter handle, even small children under some and adjusted. See instructions under the headin
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GENERAL SAFETY PRECAUTIONS carried out correctly and if service and/or repairs are not Always use common sense (2) carried out professionally. If you need further information It is not possible to cover every conceivable situation you please contact your nearest service workshop. can face when using a chain saw. Always exercise care and use your common sense. Avoid all situations which WARNING! Never use a machine with you consider to be beyond your capability. If you still feel defectiv
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GENERAL SAFETY PRECAUTIONS If the kickback is less violent or the kickback zone of Chain catcher the bar is closer to you the chain brake will be The chain catcher is designed to catch the chain if it activated manually by the movement of your left hand. snaps or jumps off. This should not happen if the chain is • In the felling position the left hand is in a position that properly tensioned (see instructions under the heading makes manual activation of the chain brake Assembly) and if th
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GENERAL SAFETY PRECAUTIONS By using cutting equipment with ”built-in” kickback CAUTION! The muffler gets very hot during and after reduction and keeping the chain sharp and well- use. This also applies during idling. Be aware of the fire maintained you can reduce the effects of kickback. hazard, especially when working near flammable Bar substances and/or vapours. The smaller the tip radius the lower the chance of kickback. WARNING! Never use a saw without a Chain muffler, or with a damaged mu
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GENERAL SAFETY PRECAUTIONS When you sharpen a cutting tooth there are four important recommendation assumes that the length of the factors to remember. cutting teeth is not reduced excessively. 1 Filing angle (19) • You will need a flat file and a depth gauge tool. We 2 Cutting angle (20) recommend that you use our depth gauge tool to 3 File position (21) acheive the correct depth gauge setting and bevel for the depth gauge. 4 Round file diameter • Place the depth gauge tool over the chain. Det
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GENERAL SAFETY PRECAUTIONS 445e, 450e Checking chain lubrication • Check the chain lubrication each time you refuel. See instructions under the heading Lubricating the bar tip sprocket. Aim the tip of the bar at a light coloured surface about • Release the knob by folding it out. (30) 20 cm (8 inches) away. After 1 minute running at 3/4 • Turn the knob anti clockwise to loosen the bar cover. throttle you should see a distinct line of oil on the light (31) surface. • Adjust the tension on t
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GENERAL SAFETY PRECAUTIONS We recommend you compare the existing chain with a new chain to decide how badly the existing chain is worn. File all the teeth to the same length. When the length of the cutting teeth is reduced to 4 mm (5/32") the chain is worn out and should be replaced. Bar Check regularly: • Whether there are burrs on the edges of the bar. Remove these with a file if necessary. • Whether the groove in the bar has become badly worn. Replace the bar if necessary. • Whether the t
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ASSEMBLY Tension the chain by turning the wheel down (+). The Fitting the bar and chain chain should be tensioned until it does not sag from the underside of the bar. (32) The chain is correctly tensioned when it does not sag from the underside of the bar, but can still be turned easily by hand. Hold up the bar tip and tighten the bar knob by WARNING! Always wear gloves, when turning the knob clockwise. (33) working with the chain. ! When fitting a new chain, the chain tension has to be che
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FUEL HANDLING Two-stroke oil Fuel • For best results and performance use HUSQVARNA Note! The machine is equipped with a two-stroke engine two-stroke engine oil, which is specially formulated for and must always be run using a mixture of petrol and two- our air-cooled two-stroke engines. stroke oil. It is important to accurately measure the amount of oil to be mixed to ensure that the correct • Never use two-stroke oil intended for water-cooled mixture is obtained. When mixing small amounts
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FUEL HANDLING Fuelling WARNING! Never use a machine with visible damage to the spark plug guard ! and ignition cable. A risk of sparking arises, which can cause a fire. Transport and storage WARNING! Taking the following • Always store the chain saw and fuel so that there is no precautions, will lessen the risk of fire: ! risk of leakages or fumes coming into contact with sparks or naked flames from electrical equipment, Do not smoke and do not place any hot electric motors, relays/switches,
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STARTING AND STOPPING Warm engine Starting and stopping Start position, 1: The correct choke/start throttle setting for warm starting is obtained by initially moving the choke WARNING! Note the following before control by pulling the red control outward - upwards. (50) starting: ! Decompression valve (2): Press the valve to reduce the pressure in the cylinder and make starting easier. Once The chain brake must be engaged when the machine has started the valve will automatically return the
