Operator’s manual 445 445e 450 450e Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. English 1153136-95 Rev.
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KEY TO SYMBOLS Symbols on the machine and/or in the manual: WARNING! Chain saws can be dangerous! Careless or improper use can result in serious or fatal injury to the operator or others. Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. Always wear: • Approved protective helmet • Approved hearing protection • Protective goggles or a visor Switch off the engine before carrying out any checks or maintenance.
CONTENTS Contents KEY TO SYMBOLS Symbols on the machine and/or in the manual: .... CONTENTS Contents ............................................................... INTRODUCTION Dear customer! ..................................................... WHAT IS WHAT? What is what on the chain saw? ........................... GENERAL SAFETY PRECAUTIONS Before using a new chain saw .............................. Important .............................................................. Always use common sense ........
INTRODUCTION Dear customer! Congratulations on your choice to buy a Husqvarna product! Husqvarna is based on a tradition that dates back to 1689, when the Swedish King Karl XI ordered the construction of a factory on the banks of the Huskvarna River, for production of muskets. The location was logical, since water power was harnessed from the Huskvarna River to create the water-powered plant.
GENERAL SAFETY PRECAUTIONS Before using a new chain saw • • • • • • Please read this manual carefully. (1) - (113) refer to figures on p. 2-6. Check that the cutting equipment is correctly fitted and adjusted. See instructions under the heading Assembly. Refuel and start the chain saw. See the instructions under the headings Fuel Handling and Starting and Stopping. Do not use the chain saw until sufficient chain oil has reached the chain. See instructions under the heading Cutting equipment.
GENERAL SAFETY PRECAUTIONS Always use common sense (2) It is not possible to cover every conceivable situation you can face when using a chain saw. Always exercise care and use your common sense. Avoid all situations which you consider to be beyond your capability. If you still feel uncertain about operating procedures after reading these instructions, you should consult an expert before continuing. Do not hesitate to contact your dealer or us if you have any questions about the use of the chain saw.
GENERAL SAFETY PRECAUTIONS If you get a violent kickback while the kickback zone of the bar is farthest away from you the chain brake is designed to be activated by the inertia in the kickback direction. (7) If the kickback is less violent or the kickback zone of the bar is closer to you the chain brake is designed to be activated manually by the movement of your left hand. • In the felling position the left hand is in a position that makes manual activation of the chain brake impossible.
GENERAL SAFETY PRECAUTIONS Muffler • The muffler is designed to keep noise levels to a minimum and to direct exhaust fumes away from the user. ! WARNING! The exhaust fumes from the engine are hot and may contain sparks which can start a fire. Never start the machine indoors or near combustible material! In areas with a hot, dry climate there is a high risk of fires.
GENERAL SAFETY PRECAUTIONS Chain • • Chain pitch (inches) (14) • Drive link width (mm/inches) (16) • Number of drive links. (17) General advice on adjusting depth gauge setting • Sharpening your chain and adjusting depth gauge setting General information on sharpening cutting teeth • Never use a blunt chain. When the chain is blunt you have to exert more pressure to force the bar through the wood and the chips will be very small.
GENERAL SAFETY PRECAUTIONS 445, 450 Never use waste oil! Using waste oil can be dangerous to you and damage the machine and environment. IMPORTANT! When using vegetable based saw chain oil, dismantle and clean the groove in the bar and saw chain before long-term storage. Otherwise there is a risk of the saw chain oil oxidizing, which will result in the saw chain becoming stiff and the bar tip sprocket jamming. • Loosen the bar nut that holds the clutch cover and chain brake. Use the combination spanner.
GENERAL SAFETY PRECAUTIONS Needle bearing lubrication ! Both versions of sprockets have a needle bearing on the drive shaft, which has to be greased regularly (once a week). NB! Use only high quality bearing grease or engine oil. See instructions under the heading Maintenance, Needle bearing lubrication. Checking wear on cutting equipment Check the chain daily for: • Visible cracks in rivets and links. • Whether the chain is stiff. • Whether rivets and links are badly worn.
ASSEMBLY Fitting the bar and chain ! WARNING! Always wear gloves, when working with the chain. 445, 450 Tension the chain by turning the wheel down (+). The 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 turning the knob clockwise.
FUEL HANDLING Fuel Two-stroke oil Note! The machine is equipped with a two-stroke engine and must always be run using a mixture of gasoline and two-stroke oil. It is important to accurately measure the amount of oil to be mixed to ensure that the correct mixture is obtained. When mixing small amounts of fuel, even small inaccuracies can drastically affect the ratio of the mixture.
FUEL HANDLING Fueling ! 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 precautions, will lessen the risk of fire: • Do not smoke and do not place any hot objects in the vicinity of fuel.
STARTING AND STOPPING Starting and stopping ! WARNING! Note the following before starting: The chain brake must be engaged when the chain saw is started to reduce the chance of contact with the moving chain during starting. Never start a chain saw unless the bar, chain and all covers are fitted correctly. Otherwise the clutch can come loose and cause personal injuries. Place the machine on firm ground. Make sure you have a secure footing and that the chain cannot touch anything.
WORKING TECHNIQUES Before use: (55) 1 Check that the chain brake works correctly and is not damaged. 2 Check that the rear right hand guard is not damaged. 3 Check that the throttle lockout works correctly and is not damaged. 4 Check that the stop switch works correctly and is not damaged. 5 Check that all handles are free from oil. 6 Check that the anti vibration system works and is not damaged. 7 Check that the muffler is securely attached and not damaged.
WORKING TECHNIQUES saw chain and be thrown towards you. Even if this does not need to be a danger, you may be surprised and lose control of the saw. Never saw stacked logs or branches without first separating them. Only saw one log or one piece at a time. Remove the cut pieces to keep your working area safe. (57) Terms 4 Never use the chain saw above shoulder height and avoid cutting with the tip of the bar.
WORKING TECHNIQUES The log is lying on the ground. There is little risk of the chain jamming or the object splitting. However there is a risk that the chain will touch the ground when you finish the cut. (68) Another very important factor, which does not affect the felling direction but does affect your safety, is to make sure the tree has no damaged or dead branches that might break off and hit you during felling. Cut all the way through the log from above.
WORKING TECHNIQUES Felling cut The felling cut is made from the opposite side of the tree and it must be perfectly horizontal. Stand on the left side of the tree and cut on the pull stroke. Make the felling cut about 1.5-2 inches (3-5 cm) above the bottom directional cut. (81) Finish the felling cut parallel with the directional cut line so that the distance between them is at least 1/10 of the trunk diameter. The uncut section of the trunk is called the felling hinge.
MAINTENANCE General The user must only carry out the maintenance and service work described in this manual. More extensive work must be carried out by an authorized service workshop. Carburetor adjustment Your Husqvarna product has been designed and manufactured to specifications that reduce harmful emissions. Checking, maintaining and servicing chain saw safety equipment Note! All servicing and repair work on the machine requires special training. This is especially true of the machine′s safety equipment.
MAINTENANCE Throttle lockout Muffler • Make sure the throttle control is locked at the idle setting when the throttle lockout is released. (95) Never use a machine that has a faulty muffler. • Press the throttle lockout and make sure it returns to its original position when you release it. (96) • Check that the throttle control and throttle lockout move freely and that the return springs work properly. (97) • Start the chain saw and apply full throttle.
MAINTENANCE Tensioning the recoil spring • Hook the starter cord in the notch in the pulley and turn the starter pulley about 2 turns clockwise. Note! Check that the pulley can be turned an additional 1/2 turn when the starter cord is pulled all the way out. (104) The filter can be cleaned more thoroughly by washing it in water and detergent. An air filter that has been in use for a long time cannot be cleaned completely. The filter must therefore be replaced with a new one at regular intervals.
MAINTENANCE Cooling system Winter use Running problems can occur when using the machine in the cold and snowy conditions caused by: To keep the working temperature as low as possible the machine is equipped with a cooling system. The cooling system consists of: 1 Air intake on the starter. 2 Air guide plate. 3 Fins on the flywheel. 4 Cooling fins on the cylinder. 5 Cylinder cover (directs cold air over the cylinder).
MAINTENANCE Maintenance schedule The following is a list of the maintenance that must be performed on the machine. Most of the items are described in the Maintenance section. Daily maintenance Weekly maintenance Monthly maintenance Clean the outside of the machine. On chain saws without a catalytic converter, check the cooling system weekly. Check the brake band on the chain brake for wear. Replace when less than 0.024 inch (0.6 mm) remains at the most worn point.
TECHNICAL DATA Technical data 445 445e 450e 450 Cylinder displacement, cu.
TECHNICAL DATA Bar and chain combinations Chain saw models Husqvarna 445, 445e, 450 and 450e met the kickback performance requirements of ANSI B 175.12000 when tested with the combinations of bars and saw chains listed below. The saw chain Husqvarna H30 is also classified as a low kickback saw chain since it met the requirements for low kickback saw chain outlined in ANSI B 175.12000. We recommend to use only the listed combinations of bars and chains for chain saw models Husqvarna 445, 445e, 450 and 450e.
FEDERAL EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS The EPA (The US Environmental Protection Agency), Environment Canada and Husqvarna Forest & Garden are pleased to explain the emissions control system warranty on your 2009 and later small nonroad engine. In U.S. and Canada, new small nonroad engines must be designed, built and equipped to meet the federal stringent anti-smog standards.
FEDERAL EMISSION CONTROL WARRANTY STATEMENT MAINTENANCE, REPLACEMENT AND REPAIR OF EMISSION-RELATED PARTS Any Husqvarna Forest & Garden approved replacement part used in the performance of any warranty maintenance or repairs on emission-related parts, will be provided without charge to the owner if the part is under warranty. EMISSION CONTROL WARRANTY PARTS LIST 1 Carburetor and internal parts 2 Intake pipe, airfilter holder and carburetor bolts.
AMERICAN STANDARD SAFETY PRECAUTIONS Safety precautions for chain saw users (ANSI B175.1-2000 Annex C) Kickback safety precautions ! WARNING! Kickback may occur when the nose or tip of the guide bar touches an object, or when the wood closes in and pinches the saw chain in the cut. Tip contact in some cases may cause a lightning fast reverse reaction, kicking the guide bar up and back towards the operator.
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The engine exhaust from this product contains chemical known to the State of California to cause cancer, birth defects or other reproductive harm.
