Husqvarna 966906738, 966906636, 965084001 User Manual

Oper ator ′ s manual

445 445e 450e

Please r ead the operator’s manual carefully and make sure you understand the instructions before using the machine.

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KEY T O SYMBOLS

Symbols on the mac hine:

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 you understand the instructions before using the machine.

Always wear:

• Approved protective helmet

• Approved hearing protection

• Protective goggles or a visor

This product is in accordance with applicable EC directives.

Noise emission to the environment according to the European Community’s Directive. The machine’s emission is speciﬁed in chapter Technical data and on label.

Chain brake, activated (right) Chain brake, not activated (left)

Decompression v alve: The valve

is to reduce the pressure in the cylinder and make starting easier. You should always use the decompression valve when starting the machine.

Ignition; choke: Set the choke control

in the choke position. This should automatically set the stop switch to the start position.

Air purge

Adjustment of the oil pump

Other symbols/decals on the mac hine refer to special certiﬁcation requirements for certain markets.

Symbols in the operator’ s manual:

Switch off the engine bef ore carrying out any checks or maintenance. CAUTION! The start/stop switch automatically returns to run position. In order to prevent unintentional starting, the spark plug cap must be removed from the spark plug when assembling, checking and/or performing maintenance.

Always wear approved protective gloves.

Regular cleaning is required.

Visual check.

Protective goggles or a visor must be worn.

Refuelling.

Filling with oil and adjusting oil ﬂow.

The chain brake must be engaged when the chain saw is started.

WARNING! Kickback may occur when the nose or tip of the guide bar touches an object, and cause a lightning fast reverse reaction, kicking the guide bar up and towards the operator. May cause serious personal injury.

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Contents

KEY TO SYMBOLS

Symbols on the machine: ...................................... 7

Symbols in the operator’s manual: ........................ 7

CONTENTS

Contents ............................................................... 8

INTR ODUCTION

Dear Customer , ..................................................... 9

WHA T IS WHAT?

What is what on the chain sa w? ........................... 9

GENERAL SAFETY PRECA UTIONS

Bef ore using a new chain saw .............................. 10

Important .............................................................. 10

Always use common sense .................................. 11

Personal protective equipment ............................. 11

Machine ′ s safety equipment ................................. 11

Cutting equipment ................................................. 13

ASSEMBL Y

Fitting the bar and chain ....................................... 17

FUEL HANDLING

Fuel ....................................................................... 18

Fuelling ................................................................. 19

Fuel safety ............................................................ 19

ARTING AND STOPPING

Star ting and stopping ............................................ 20

ORKING TECHNIQUES

Bef ore use: ............................................................ 22

General working instructions ................................ 22

How to avoid kickback ........................................... 25

MAINTENANCE

Gener al ................................................................. 26

Carburettor adjustment ......................................... 26

Checking, maintaining and servicing chain saw

safety equipment ..................................................

Mufﬂer ................................................................... 27

Starter ................................................................... 27

Air ﬁlter .................................................................. 28

Spark plug ............................................................. 28

Lubricating the bar tip sprocket ............................. 28

Needle bearing lubrication .................................... 28

Cooling system ..................................................... 29

”Air Injection” centrifugal cleaning ......................... 29

Winter use ............................................................. 29

Maintenance schedule .......................................... 30

TECHNICAL D ATA

echnical data ....................................................... 31

Bar and chain combinations ................................. 32

Saw chain ﬁling and ﬁle gauges ........................... 32

EC-declaration of conformity ................................ 33

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INTR ODUCTION

Dear Customer ,

Cong ratulations 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 Husqvarna River, for production of muskets. The location was logical, since water power was harnessed from the Huskvarna River to create the water-powered plant. During the more than 300 years of beeing, the Husqvarna factory has produced a lot of different products, from wood stoves to modern kitchen appliances, sewing machines, bicycles, motorcycles etc. In 1956, the ﬁrst motor driven lawn mowers appeared, followed by chain saws in 1959, and it is within this area Husqvarna is working today.

Today Husqvarna is one of the leading manufacturers in the world of forest and garden products, with quality as our highest priority. The business concept is to develop, manufacture and market motor driven products for forestry and gardening as well as for building and construction industry. Husqvarna front edge according to ergonomics, usability, security and environmental protection. That is the reason why we have developed many different features to provide our products within these areas.

We are convinced that you will appreciate with great satisfaction the quality and performance of our product for a very long time to come. The purchase of one of our products gives you access to professional help with repairs and service whenever this may be necessary. If the retailer who sells your machine is not one of our authorised dealers, ask for the address of your nearest service workshop.

It is our wish that you will be satisﬁed with your product and that it will be your companion for a long time. Think of this operator following its life span and the second-hand value of the machine can be extended. If you will sell this machine, make sure that the buyer will get the operator

Thank you for using a Husqvarna product.

Husqvarna AB has a policy of continuous product development and therefore reserves the right to modify the design and appearance of products without prior notice.

s manual as a valuable document. By

content (using, service, maintenance etc) the

s aim is also to be in the

s manual.

′

What is what on the c hain saw?

Cylinder cover

2 Decompression valve

3 Air purge

4 Start reminder

5 Combined start and stop switch

6 Rear handle

7 Information and warning decal

8 Fuel tank

9 Adjuster screws carburettor

10 Starter handle

11 Starter

12 Chain oil tank

13 Product and serial number plate

14 Felling direction mark

15 Front handle

16 Front hand guard

17 Mufﬂer

18 Chain

19 Bar tip sprocket

20 Bar

21 Spike bumper

22 Chain catcher

23 Chain tensioning screw

24 Clutch cover

25 Right hand guard

26 Throttle control

27 Throttle lockout

28 Chain tensioner wheel (445e, 450e)

29 Knob (445e, 450e)

30 Operator ′ s manual

31 Bar guard

32 Combination spanner

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GENERAL SAFETY PRECA UTIONS

•

Bef ore 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.

• Long-term exposure to noise can result in permanent hearing impairment. So always use approved hearing protection.

ARNING! Under no circumstances may

the design of the machine be modiﬁed

without the permission of the manufacturer. Always use genuine accessories. Non-authorized modiﬁcations and/or accessories can result in serious personal injury or the death of the operator or others.

ARNING! A chain saw is a dangerous

tool if used carelessly or incorrectly and

can cause serious, even fatal injuries. It is very important that you read and understand the contents of this operator’s manual.

ARNING! The inside of the mufﬂer

contain chemicals that may be

carcinogenic. Avoid contact with these elements in the event of a damaged mufﬂer.

WARNING! Long term inhalation of the engine’s exhaust fumes, chain oil mist

and dust from sawdust can represent a health risk.

WARNING! Never allow children to use or be in the vicinity of the machine. As the machine is equipped with a springloaded stop switch and can be started by low speed and force on the starter handle, even small children under some circumstances can produce the force necessary to start the machine. This can mean a risk of serious personal injury. Therefore remove the spark plug cap when the machine is not under close supervision.

Impor tant

IMPORTANT!

This chain saw for forest service is designed for forest work such as felling, delimbing and cutting.

You should only use the saw with the bar and chain combinations we recommend in the chapter Technical data.

Never use the machine if you are fatigued, while under the inﬂuence of alcohol or drugs, medication or anything that could affect your vision, alertness, coordination or judgement.

Wear personal protective equipment. See instructions under the heading ”Personal protective equipment”.

Do not modify this product or use it if it appears to have been modiﬁed by others.

Never use a machine that is faulty. Carry out the checks, maintenance and service instructions described in this manual. Some maintenance and service measures must be carried out by trained and qualiﬁed specialists. See instructions under the heading Maintenance.

Never use any accessories other than those recommended in this manual. See instructions under the headings Cutting equipment and Technical data.

CAUTION! Always wear protective glasses or a face visor to reduce the risk of injury from thrown objects. A chain saw is capable of throwing objects, such as wood chips, small pieces of wood, etc, at great force. This can result in serious injury, especially to the eyes.

WARNING! This machine produces an electromagnetic ﬁeld during operation.

This ﬁeld may under some circumstances interfere with active or passive medical implants. To reduce the risk of serious or fatal injury, we recommend persons with medical implants to consult their physician and the medical implant manufacturer before operating this machine.

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WARNING! Running an engine in a conﬁned or badly ventilated area can result in death due to asphyxiation or carbon monoxide poisoning.

WARNING! Faulty cutting equipment or the wrong combination of bar and saw chain increases the risk of kickback! Only use the bar/saw chain combinations we recommend, and follow the ﬁling instructions. See instructions under the heading Technical data.

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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. We will willingly be of service and provide you with advice as well as help you to use your chain saw both efﬁciently and safely. Attend a training course in chain saw usage if possible. Your dealer, forestry school or your library can provide information about which training materials and courses are available. Work is constantly in progress to improve the design and technology - improvements that increase your safety and efﬁciency. Visit your dealer regularly to see whether you can beneﬁt from new features that have been introduced.

Personal protective equipment

WARNING! Most chain saw accidents happen when the chain touches the

operator. You must use approved personal protective equipment whenever you use the machine. Personal protective equipment cannot eliminate the risk of injury but it will reduce the degree of injury if an accident does happen. Ask your dealer for help in choosing the right equipment.

• Approved protective helmet

• Hearing protection

• Protective goggles or a visor

• Gloves with saw protection

• Trousers with saw protection

• Boots with saw protection, steel toe-cap and non-slip sole

• Always have a ﬁrst aid kit nearby.

• Fire Extinguisher and Shovel

Generally clothes should be close-ﬁtting without restricting your freedom of movement.

IMPORTANT! Sparks can come from the mufﬂer, the bar and chain or other sources. Always have ﬁre extinguishing tools available if you should need them. Help prevent forest ﬁres.

Machine′s safety equipment

In this section the machine’s safety features and their function are explained. For inspection and maintenance see instructions under the heading Checking, maintaining and servicing chain saw safety equipment. See instructions under the heading, What is what?, to ﬁnd where these parts are located on your machine.

The life span of the machine can be reduced and the risk of accidents can increase if machine maintenance is not

carried out correctly and if service and/or repairs are not carried out professionally. If you need further information please contact your nearest service workshop.

WARNING! Never use a machine with defective safety components. Safety equipment must be inspected and maintained. See instructions under the heading Checking, maintaining and servicing chain saw safety equipment. If your machine does not pass all the checks, take the saw to a servicing dealer for repair.

Chain brake and front hand guard

Your chain saw is equipped with a chain brake that is designed to stop the chain if you get a kickback. The chain brake reduces the risk of accidents, but only you can prevent them.

Take care when using your saw and make sure the kickback zone of the bar never touches any object.

• The chain brake (A) can either be activated manually (by your left hand) or automatically by the inertia release mechanism.

• The brake is applied when the front hand guard (B) is pushed forwards.

• This movement activates a spring-loaded mechanism that tightens the brake band (C) around the engine drive system (D) (clutch drum).

• The front hand guard is not designed solely to activate the chain brake. Another important feature is that it reduces the risk of your left hand hitting the chain if you lose grip of the front handle.

• The chain brake must be engaged when the chain saw is started to prevent the saw chain from rotating.

(52)

• Use the chain brake as a ”parking brake” when starting and when moving over short distances, to reduce the risk of moving chain accidentally hitting your leg or anyone or anything close by. Do not leave the chain saw switched on with the chain brake activated for long periods. The chain saw can become very hot.

• The chain brake is released by moving the front hand guard marked ”PULL BACK TO RESET” back, towards the front handle.

• Kickback can be very sudden and violent. Most kickbacks are minor and do not always activate the chain brake. If this happens you should hold the chain saw ﬁrmly and not let go.

• The way the chain brake is activated, either manually or automatically by the inertia release mechanism, depends on the force of the kickback and the position of the chain saw in relation to the object that the kickback zone of the bar strikes.

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)

(3)

(4)

(5)

(6)

(56)

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