Instruction/ maintenance manual of the product 445, 445e, 450e Husqvarna
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E E E E n n n n g g g g l l l l i i i i s s s s h h h h 115 10 81-26 Re v .2 2008-01-11 445 445e 450e Oper ator ′ s manual Please r ead the operator’ s manual carefully and mak e sure you understand the instructions before using the machine.
KEY T O SYMBOLS 2 – English 115 10 81-26 Re v .2 2008-01-11 Symbols on the mac hine: W ARNING! Chain saws can be dangerous! Careless or incorrect use can result in serious or fatal injury to the operator or others. Please read the operator’ s manual carefully and make sure y ou understand the instructions before using the machine.
CONTENTS English – 3 115 10 81-26 Re v .2 2008-01-11 Contents KEY T O SYMBOLS Symbols on the machine: 2 Symbols in the operator’ s manual: 2 CONTENTS Contents 3 INTR ODUCTION Dear Customer , 4 WHA.
4 – English INTR ODUCTION 115 10 81-26 Re v .2 2008-01-11 Dear Customer , Cong ratulations on your choice to b uy 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 Husqvarna River , for production of muskets .
English – 5 WHA T IS WHA T? 115 10 81-26 Re v .2 2008-01-11 What is what on the c hain saw? 1 Cylinder cov er 2 Decompression valv e 3 Air purge 4 Star t reminder 5 Combined star t and stop switch 6.
GENERAL SAFETY PRECA UTIONS 6 – English 115 10 81-26 Re v .2 2008-01-11 Bef ore using a new c hain saw • Please read this manual carefully . • Check that the cutting equipment is correctly fitted and adjusted. See instructions under the heading Assembly .
GENERAL SAFETY PRECA UTIONS English – 7 115 10 81-26 Re v .2 2008-01-11 Al ways use common sense It is not possib le to cov er every conceivab le situation you can face when using a chain sa w . Always e xercise care and use your common sense . A void all situations which y ou consider to be bey ond your capability .
GENERAL SAFETY PRECA UTIONS 8 – English 115 10 81-26 Re v .2 2008-01-11 • The chain brake (A) can either be activ ated manually (by y our left hand) or automatically by the iner tia release mechanism. • The brake is applied when the front hand guard (B) is pushed forw ards.
GENERAL SAFETY PRECA UTIONS English – 9 115 10 81-26 Re v .2 2008-01-11 If the kickbac k is less violent or the kickback zone of the bar is closer to you the chain brak e will be activated manually b y the movement of y our left hand.
GENERAL SAFETY PRECA UTIONS 10 – English 115 10 81-26 Re v .2 2008-01-11 Right hand guar d Apar t from protecting your hand if the chain jumps or snaps, the right hand guard stops branches and twigs from interfering with your g r ip on the rear handle.
GENERAL SAFETY PRECA UTIONS English – 11 115 10 81-26 Re v .2 2008-01-11 Cutting equipment This section describes how to choose and maintain your cutting equipment in order to: • Reduce the risk of kickback. • Reduce the risk of the saw chain breaking or jumping off the bar .
GENERAL SAFETY PRECA UTIONS 12 – English 115 10 81-26 Re v .2 2008-01-11 • Number of drive links. The number of driv e links is determined by the length of the bar , the chain pitch and the number of teeth on the bar tip sprock et. • Bar groov e width (inches/mm).
GENERAL SAFETY PRECA UTIONS English – 13 115 10 81-26 Re v .2 2008-01-11 Sharpening cutting teeth T o sharpen cutting teeth you will need a round file and a file gauge. See instructions under the heading T echnical data for inf ormation on the size of file and gauge that are recommended for the chain fitted to y our chain saw .
GENERAL SAFETY PRECA UTIONS 14 – English 115 10 81-26 Re v .2 2008-01-11 445 • Loosen the bar nut that holds the clutch cov er and chain brake . Use the combination spanner.
GENERAL SAFETY PRECA UTIONS English – 15 115 10 81-26 Re v .2 2008-01-11 Lubricating cutting equipment Chain oil Chain oil must demonstrate good adhesion to the chain and also maintain its flow characteristics regardless of whether it is warm summer or cold winter weather .
GENERAL SAFETY PRECA UTIONS 16 – English 115 10 81-26 Re v .2 2008-01-11 Chain drive sproc ket The clutch drum is fitted with one of the follo wing dr ive sprock ets: A Spur sprock et (the chain sprocket is welded on the drum) B Rim sprock et (replaceable) Regularly check the degree of wear on the drive sproc ket.
ASSEMBL Y English – 17 115 10 81-26 Re v .2 2008-01-11 Fitting the bar and chain 445 Check that the chain brak e is in disengaged position by moving the front hand guard tow ards the front handle. Remov e the bar nuts and remove the clutch co ver (chain brake).
ASSEMBL Y 18 – English 115 10 81-26 Re v .2 2008-01-11 Fit the bar ov er the bar bolts. Place the bar in its rear most position. Place the chain over the driv e sprocket locate it in the groov e on the bar. Begin on the top edge of the bar. Make sure that the edges of the cutting links are f acing forw ard on the top edge of the bar.
FUEL HANDLING English – 19 115 10 81-26 Re v .2 2008-01-11 Fuel Note! The machine is equipped with a two-stroke engine and must alwa ys be run using a mixture of petrol 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.
FUEL HANDLING 20 – English 115 10 81-26 Re v .2 2008-01-11 Fuelling Clean the area around the fuel cap . Clean the fuel and chain oil tanks regularly . The fuel filter must be replaced at least once a year . Contamination in the tanks causes malfunction.
ST AR TING AND ST OPPING English – 21 115 10 81-26 Re v .2 2008-01-11 Starting and stopping Starting The chain brak e must be engaged when the chain saw is star ted.
ST AR TING AND ST OPPING 22 – English 115 10 81-26 Re v .2 2008-01-11 Note! Reactivate the chain brake b y pushing the front hand guard bac k towards the front handle. The chain saw is now ready f or use. • Nev er star t a chain saw unless the bar , chain and all cov ers are fitted correctly .
W ORKING TECHNIQUES English – 23 115 10 81-26 Re v .2 2008-01-11 Bef ore use: 1 Check that the chain brak e works correctly and is not damaged. 2 Check that the rear right hand guard is not damaged. 3 Check that the throttle loc kout works correctly and is not damaged.
W ORKING TECHNIQUES 24 – English 115 10 81-26 Re v .2 2008-01-11 6 Before mo ving your chain saw s witch off the engine and lock the chain using the chain brak e. Carr y the chain saw with the bar and chain pointing bac kwards. Fit a guard to the bar before tr anspor ting the chain saw or carrying it for any distance .
W ORKING TECHNIQUES English – 25 115 10 81-26 Re v .2 2008-01-11 7 T ake great care when y ou cut with the top edge of the bar , i.e. when cutting from the underside of the object. This is known as cutting on the push stroke . The chain tries to push the chain saw back to wards the user .
W ORKING TECHNIQUES 26 – English 115 10 81-26 Re v .2 2008-01-11 Limbing When limbing thick br anches you should use the same approach as for cutting. Cut difficult branches piece by piece . Cutting If you ha ve a pile of logs, each log you attempt to cut should be remov ed from the pile, placed on a saw horse or runners and cut individually .
W ORKING TECHNIQUES English – 27 115 10 81-26 Re v .2 2008-01-11 Felling direction The aim is to f ell the tree in a position where you can limb and cross-cut the log as easily as possible. Y ou want it to fall in a location where y ou can stand and move about safely .
W ORKING TECHNIQUES 28 – English 115 10 81-26 Re v .2 2008-01-11 Ne xt mak e the bottom cut so that it finishes exactly at the end of the top cut. The directional cuts should run 1/4 of the diameter through the trunk and the angle between the top cut and bottom cut should be 45 ° .
W ORKING TECHNIQUES English – 29 115 10 81-26 Re v .2 2008-01-11 Freeing a tree that has fallen badl y Freeing a ”trapped tree” It is very dangerous to remov e a trapped tree and there is high accident risk. Nev er tr y to fell the tree that is tr apped.
W ORKING TECHNIQUES 30 – English 115 10 81-26 Re v .2 2008-01-11 Kickbac k always occurs in the cutting plane of the bar . Normally the chain saw and bar are thrown backw ards and upwards tow ards the user.
MAINTENANCE English – 31 115 10 81-26 Re v .2 2008-01-11 General The user must only carry out the maintenance and service work descr ibed in this Operator’ s Manual.
MAINTENANCE 32 – English 115 10 81-26 Re v .2 2008-01-11 Checking the inertia brake release Place the chain saw , with the engine switched off, on a stump or other stable surf ace. Release the front handle and let the saw f all by its own weight, rotating around the rear handle towards the stump .
MAINTENANCE English – 33 115 10 81-26 Re v .2 2008-01-11 Chain catcher Chec k that the chain catcher is not damaged and is firmly attached to the body of the chain saw . Right hand guar d Chec k that the right hand guard is not damaged and that there are no visible def ects, such as cracks .
MAINTENANCE 34 – English 115 10 81-26 Re v .2 2008-01-11 use a muffler if the spark arrestor mesh is missing or defective. The muffler is designed to reduce the noise le vel and to direct the exhaust gases a way from the oper ator.
MAINTENANCE English – 35 115 10 81-26 Re v .2 2008-01-11 Replacing the return and drive springs Recoil spring (A) • Lift up the star ter pulley . See instructions under the heading Changing a broken or worn starter cord. Remember that the recoil spring is coiled under tension in the star ter housing.
MAINTENANCE 36 – English 115 10 81-26 Re v .2 2008-01-11 Spark plug The spark plug condition is influenced by: • Incorrect carburettor adjustment.
MAINTENANCE English – 37 115 10 81-26 Re v .2 2008-01-11 ”Air Injection” centrifugal cleaning Centrifugal cleaning means the following: All air to the carburettor passes through the starter.
38 – English MAINTENANCE 115 10 81-26 Re v .2 2008-01-11 Maintenance schedule The follo wing 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 Weekl y maintenance Monthly maintenance Clean the outside of the machine.
English – 39 TECHNICAL D A T A 115 10 81-26 Re v .2 2008-01-11 T echnical data Note 1: Noise emissions in the en vironment measured as sound pow er (L W A ) in conf or mity with EC directiv e 2000/14/EC.
40 – English TECHNICAL D A T A 115 10 81-26 Re v .2 2008-01-11 Bar and chain combinations The follo wing combinations are CE approved. Sa w c hain filing and file gaug es Bar Chain Length, inch Pitch, inch Gauge, mm Max. nose radius T ype Length, drive links (no.
English – 41 TECHNICAL D A T A 115 10 81-26 Re v .2 2008-01-11 EC-declaration of conf ormity (Applies to Eur ope only) Husqvarna AB , SE-561 82 Huskv ar na, Sweden, tel: +46-36-146500, declares unde.
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However, one of the most important roles played by the user manual is to help in solving problems with Husqvarna 445, 445e, 450e. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Husqvarna 445, 445e, 450e along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
