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Husqvarna 450 Operation Manual - Page 2

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1 5 6 8 9 11 12 14 16 15 2 - English 2 3 4 7 10 13 17 1153136-26 Rev.1 2009-12-29

Section	Page
Symbols on the machine:	7
Symbols in the operator’s manual:	7
Contents	8
Dear Customer,	9
Before using a new chain saw	10
Important	10
Always use common sense (2)	11
Personal protective equipment	11
Machine¢s safety equipment	11
Chain brake and front hand guard	11
Will my hand always activate the chain brake during a kickback?	12
Will my inertia activated chain brake always activate during kickback in the event of a kickback?	12
Will my chain brake always protect me from injury in the event of a kickback?	12
Throttle lockout	12
Chain catcher	12
Right hand guard	12
Vibration damping system	12
Stop switch	12
Muffler	12
Cutting equipment	13
General rules	13
Cutting equipment designed to reduce kickback	13
Sharpening your chain and adjusting depth gauge setting	13
Tensioning the chain	14
Lubricating cutting equipment	15
Fitting the bar and chain	17
445	17
445e, 450e	17
Fitting a spike bumper	17
Fuel	18
Petrol	18
Two-stroke oil	18
Mixing	18
Chain oil	18
Fuelling	19
Fuel safety	19
Transport and storage	19
Long-term storage	19
Starting and stopping	20
Starting	20
Stopping	21
Before use: (55)	22
General working instructions	22
Basic safety rules	22
General rules	22
Basic cutting technique	23
Tree felling technique	24
Freeing a tree that has fallen badly	25
How to avoid kickback	25
What is kickback?	25
General	26
Carburettor adjustment	26
Function	26
Basic settings and running in	26
Fine adjustment of the idle speed T	26
Correctly adjusted carburettor	26
Checking, maintaining and servicing chain saw safety equipment	26
Chain brake and front hand guard	26
Throttle lockout	27
Chain catcher	27
Right hand guard	27
Vibration damping system	27
Stop switch	27
Muffler	27
Starter	27
Replacing the starter cord	27
Tensioning the recoil spring	28
Replacing the return and drive springs	28
Fitting the starter	28
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
Temperature -5°C or colder:	29
Maintenance schedule	30
Technical data	31
Bar and chain combinations	32
Saw chain filing and file gauges	32
EC-declaration of conformity (Applies to Europe only)	33
Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel: +46-36-146500, declares under sole responsibility that the chain saws for forest service Husqvarna 445, 445e and 450e from 2009’s serial numbers and onwards (the year is clearly stated in plain text on the ty/Dest/G1034009	33

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English

1153136-26

Rev

2009-12-29