Husqvarna 445 EPA II, 445e EPA II, 450e EPA II manuale d’uso

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 445 EP A II 445e EP A II 450e EP A II Oper ator’ s manual Please r ead the operator’ s manual carefully and mak e sure y ou understand the instructions before using the machine.[...]

2 – English KEY T O SYMBOLS Symbols on the mac hine: W ARNING! Chain saws can be dangerous! Careless or improper use can result in serious or f atal injur y to the operator or others. Please read the operator’ s manual carefully and make sure y ou understand the instructions before using the machine . Alwa ys wear: • Approv ed protective helm[...]

English – 3 CONTENTS 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 – English INTR ODUCTION Dear customer! Cong ratulations on y our choice to buy a Husqv ar na product! Husqv ar na is based on a tradition that dates bac k to 1689, when the Swedish King Karl XI ordered the construction of a factory on the banks of the Huskvarna River , f or production of muskets . The location was logical, since w ater power wa[...]

English – 5 WHA T IS WHA T? What is what on the chain sa w? 1 Cylinder cov er 2 Decompression valv e 3 Air purge 4 Star t reminder 5 Combined stop s witch and choke control 6 Rear handle 7 Inf or mation and warning decal 8 Fuel tank 9 Adjuster screws carb uretor 10 Star ter handle 11 Star ter 12 Chain oil tank 13 Product and serial number plate 1[...]

6 – English GENERAL SAFETY PRECA UTIONS 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 . • Refuel and star t the chain saw . See the instructions under the headings Fuel Handling and Star ting and Stopping.[...]

English – 7 GENERAL SAFETY PRECA UTIONS to be be yond y our capability . If you still f eel uncer tain about operating procedures after reading these instructions, y ou should consult an e xper t before contin uing. Do not hesitate to contact your dealer or us if y ou hav e any questions about the use of the chain saw . W e will willingly be of s[...]

8 – English GENERAL SAFETY PRECA UTIONS • This mov ement activates a spring-loaded mechanism that tightens the brak e band (C) around the engine dr iv e system (D) (clutch drum). • The front hand guard is not designed solely to activate the chain brak e. Another important feature is that it reduces the risk of your left hand hitting the chain[...]

English – 9 GENERAL SAFETY PRECA UTIONS Will m y hand alwa ys activ ate the chain brake during a kickbac k? No . It tak es a cer tain force to mo ve the hand guard f orward. If your hand only lightly touches the front guard or slips o ver it, the f orce may not be enough to trigger the chain brak e. Y ou should also maintain a firm gr ip of the [...]

10 – English GENERAL SAFETY PRECA UTIONS Cutting hardwoods (most broadleaf trees) creates more vibration than cutting softwoods (most conif ers). Cutting with cutting equipment that is blunt or f aulty (wrong type or badly shar pened) will increase the vibration le v el. Stop switc h Use the stop s witch to s witch off the engine. Muffler The mu[...]

English – 11 GENERAL SAFETY PRECA UTIONS Cutting equipment designed to reduce kickbac k The only wa y to a void kic kback is to make sure that the kickbac k zone of the bar ne ver touches an ything. By using cutting equipment with ”built-in” kic kback reduction and keeping the chain sharp and well-maintained you can reduce the eff ects of kic[...]

12 – English GENERAL SAFETY PRECA UTIONS • The cutting par t of the chain is called the cutter and consists of a cutting tooth (A) and the depth gauge (B). The cutters cutting depth is determined by the difference in height between the two (depth gauge setting). When you sharpen a cutting tooth there are four important f actors to remember . 1 [...]

English – 13 GENERAL SAFETY PRECA UTIONS Adjustment of depth gauge setting • The cutting teeth should be newly sharpened before adjusting the depth gauge setting. W e recommend that you adjust the depth gauge setting e v er y third time you shar pen the cutting teeth. NOTE! This recommendation assumes that the length of the cutting teeth is not[...]

14 – English GENERAL SAFETY PRECA UTIONS • Adjust the tension on the chain by turning the wheel down (+) f or tighter tension and up (-) to loosen the tension. • Tighten the bar clutch by turning the knob clockwise . • F old the knob back in to lock the tensioning. Lubricating cutting equipment Chain oil Chain oil must demonstr ate good adh[...]

English – 15 GENERAL SAFETY PRECA UTIONS • Check that the bar tip sproc ket turns freely and that the lubricating hole in the tip sprocket is not b lock ed. Clean and lubricate if necessar y . If the chain lubrication system is still not working after carr ying out the abov e checks and associated measures y ou should contact your servicing dea[...]

16 – English ASSEMBL Y Fitting the bar and c hain 445 Check that the chain br ake is in disengaged position b y moving the front hand guard to wards the front handle. Remov e the bar nuts and remov e the clutch cov er (chain brak e). T ake off the transportation r ing (A). Fit the bar ov er the bar bolts. Place the bar in its rear most position. [...]

English – 17 ASSEMBL Y T ension the chain by turning the wheel down (+). The chain should be tensioned until it does not sag from the underside of the bar . 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 [...]

18 – English FUEL HANDLING Fuel Note! The machine is equipped with a two-stroke engine and must alwa ys be run using a mixture of gasoline and two- stroke oil. It is impor tant to accurately measure the amount of oil to be mix ed to ensure that the correct mixture is obtained. When mixing small amounts of fuel, e ven small inaccuracies can drasti[...]

English – 19 FUEL HANDLING Fueling 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. Make sure the fuel is w ell mixed b y shaking the container bef ore refuelling. The capacities of the chain oil tank and fuel[...]

20 – English ST AR TING AND ST OPPING Starting and stopping Cold engine Starting: The chain brake should be activ ated when star ting the chain saw . Activ ate the chain brake b y pushing the front hand guard f orwards. Ignition; choke (A): Set the chok e control in the choke position by pulling the red control outw ard - upward (1). The stop s w[...]

English – 21 ST AR TING AND ST OPPING Note! Pull the front hand guar d towards the fr ont handle. The chain brake is now disenga ged. Y our saw is ready for use. • Ne ver star t a chain sa w unless the bar , chain and all cov ers are fitted correctly . See instr uctions under the heading Assembly . Without a bar and chain attached to the chain[...]

22 – English W ORKING TECHNIQ UES Bef ore use: 1 Check that the chain br ake 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. 4 Check that the stop s witch works correctly and is not damaged. 5 Check that all handles are free from oil.[...]

English – 23 W ORKING TECHNIQ UES General rules 1 If you understand what kic kback is and ho w it happens then you can reduce or eliminate the element of surprise. By being prepared you reduce the risk. Kickback is usually quite mild, but it can sometimes be v er y sudden and violent. 2 Alwa ys hold the chain saw firmly with your right hand on t[...]

24 – English W ORKING TECHNIQ UES Basic cutting technique General • Alwa ys use full throttle when cutting! • Reduce the speed to idle after e very cut (r unning the engine f or too long at full throttle without any load, i.e. without any resistance from the chain during cutting, can lead to serious engine damage). • Cutting from abov e = C[...]

English – 25 W ORKING TECHNIQ UES T ur n the log and finish the cut from the opposite side. The log is supported at one end. There is a high r isk that it will split. Star t by cutting from belo w (about 1/3 of the wa y through). Finish by cutting from abo ve so that the two cuts meet. The log is supported at both ends. There is a high risk that[...]

26 – English W ORKING TECHNIQ UES Remo v e any undergro wth from the base of the tree and check the area f or obstacles (stones, branches, holes , etc.) so that you ha ve a clear path of retreat when the tree starts to fall. Y our path of retreat should be roughly 135 degrees a wa y from the intended f elling direction. Felling F elling is done u[...]

English – 27 W ORKING TECHNIQ UES Freeing a tree that has fallen badl y Freeing a ”trapped tree” It is v er y dangerous to remov e a trapped tree and there is high accident risk. Ne ver try to fell the tree that is trapped. Ne ver work in the risk zone of the hanging trapped tree . The saf est method is to use a winch. • T ractor-mounted ?[...]

28 – English W ORKING TECHNIQ UES Limbing Mak e sure that y ou can stand and mov e about safely . Work on the left side of the trunk. Work as close as possib le to the chain saw f or maximum control. If possible, let the w eight of the chain saw rest on the trunk. K eep the trunk between you and the chain sa w as you mov e along the trunk. Cuttin[...]

English – 29 MAINTENANCE General The user must only carry out the maintenance and ser vice work described in this manual. More e xtensive work must be carried out by an authorised ser vice workshop . Carb uretor adjustment Y our Husqvarna product has been designed and manuf actured to specifications that reduce har mful emissions. Function • T[...]

30 – English MAINTENANCE Checking the inertia brake release With the engine turned off, hold the chain sa w ov er a stump or other firm object. Let go of the front handle so that the bar drops tow ards the stump as the chain saw rotates around the rear handle. When the bar hits the stump the brake should be applied. Checking the brake trig ger P[...]

English – 31 MAINTENANCE Chain catcher Check 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 cr acks. Vibration damping system Regularly check the vibration damping units f or crac ks or de[...]

32 – English MAINTENANCE Starter Replacing the starter cord • Loosen the screws that hold the starter against the crankcase and remov e the star ter . • Pull out the cord appro x. 30 cm (12 inches) and hook it into the notch in the rim of the pulley . Release the recoil spring by letting the pulley rotate slo wly backw ards. • Undo the bolt[...]

English – 33 MAINTENANCE Fitting the starter • T o fit the star ter , first pull out the star ter cord and place the star ter in position against the crankcase . Then slowly release the star ter cord so that the pulley engages with the pawls . • Fit and tighten the screws that hold the starter . Air filter The air filter must be regularly[...]

34 – English MAINTENANCE Cooling system T o keep the working temperature as low as possib le 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 cov er (directs cold air ov er the cylinder). Clean the c[...]

English – 35 MAINTENANCE Maintenance sc hedule The f ollowing is a list of the maintenance that must be perf ormed on the machine. Most of the items are described in the Maintenance section. Daily maintenance W eekly maintenance Monthly maintenance Clean the outside of the machine . On chain saws without a catalytic conv er ter , chec k the cooli[...]

36 – English TECHNICAL D A T A T echnical data 445 445e 450e Engine Cylinder displacement, cu.in/cm 3 2,79/45,7 2,79/45,7 3,06/50,2 Cylinder bore, inch/mm 1,65/42 1,65/42 1,73/44 Stroke , inch/mm 1,30/33 1,30/33 1,30/33 Idle speed, r pm 2700 2700 2700 P ow er , kW/hp @ r pm 2,0/2,7 @ 9000 2,0/2,7 @ 9000 2,4/3,2 @ 9000 Ignition system Manuf acture[...]

English – 37 TECHNICAL D A T A Recommended original and replacement bar and c hain combinations F ollowing is a list of recommended cutting equipment f or the Husqvarna chain saw models 445, 445e and 450e. The combinations of power head, bar and chain ha ve been tested and f ound to be in accordance with the kic kback and vibration requirements o[...]

38 – English FEDERAL EMISSION CONTR OL W ARRANTY ST A TEMENT ´®z+RB3¶55¨ ´®z+RB3¶55¨ Y OUR W ARRANTY RIGHTS AND OBLIGA TIONS The EP A (The US Environmental Protection Agency), Environment Canada and Husqv arna Forest & Garden are pleased to e xplain the emissions control system warranty on your 2001 and later small nonroad engine . In[...]

English – 39 AMERICAN ST AND ARD SAFETY PRECA UTIONS Safety precautions f or chain sa w users (ANSI B 175.1-2000 Anne x C) Kic kback safety precautions With a basic understanding of kic kback, y ou can reduce or eliminate the element of sur prise. Sudden sur prise contributes to accidents. K eep a good fir m grip on the sa w with both hands, the[...]

´®z+RB3¶55¨ 2007-03-16 ´®z+RB3¶55¨ 1150341-95[...]