![Husqvarna 420EL [15/28] General safety precautions](/img/pdf.png)
Husqvarna 420EL [15/28] General safety precautions
![Husqvarna 420EL [15/28] General safety precautions](/views2/2000368/page15/bgf.png)
GENERAL SAFETY PRECAUTIONS
English – 15
Right hand guard
Apart from protecting your hand if the chain jumps or
snaps, the right hand guard stops branches and twigs
from interfering with your grip on the rear handle. (10)
Vibrations
Cutting hardwoods (most broadleaf trees) creates more
vibration than cutting softwoods (most conifers). Cutting
with cutting equipment that is blunt or faulty (wrong type
or badly sharpened) will increase the vibration level.
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.
• Obtain optimal cutting performance.
• Extend the life of cutting equipment.
• Avoid increasing vibration levels.
General rules
• Only use cutting equipment recommended by us!
See instructions under the heading Technical data.
• Keep the chain’s cutting teeth properly
sharpened! Follow our instructions and use the
recommended file gauge. A damaged or badly
sharpened chain increases the risk of accidents.
• Maintain the correct depth gauge setting! Follow
our instructions and use the recommended depth
gauge clearance. Too large a clearance increases
the risk of kickback. (18)
• Keep the chain properly tensioned! If the chain is
slack it is more likely to jump off and lead to increased
wear on the bar, chain and drive sprocket. (23)
• Keep cutting equipment well lubricated and
properly maintained! A poorly lubricated chain is
more likely to break and lead to increased wear on the
bar, chain and drive sprocket.
Cutting equipment designed to reduce
kickback
The only way to avoid kickback is to make sure that the
kickback zone of the bar never touches anything.
By using cutting equipment with ”built-in” kickback
reduction and keeping the chain sharp and well-
maintained you can reduce the effects of kickback.
Guide bar
The smaller the tip radius the lower the chance of
kickback.
Saw chain
A chain is made up of a number of links, which are
available in standard and low-kickback versions.
Some terms that describe the bar and chain
To maintain the safety features of the cutting equipment,
you should replace a worn or damaged bar or chain with
a bar and chain combinations recommended by
Husqvarna. See instructions under the heading Technical
Data for a list of replacement bar and chain combinations
we recommend.
Guide bar
• Length (inches/cm) (12)
• Number of teeth on bar tip sprocket (T). (11)
• Chain pitch (inches). The spacing between the drive
links of the chain must match the spacing of the teeth
on the bar tip sprocket and drive sprocket. (13)
• Number of drive links. The number of drive links is
determined by the length of the bar, the chain pitch
and the number of teeth on the bar tip sprocket. (15)
• Bar groove width (inches/mm). The groove in the bar
must match the width of the chain drive links.
• Chain oil hole and hole for chain tensioner. The bar
must be matched to the chain saw design. (14)
Saw chain
• Chain pitch (inches) (13)
!
WARNING! Under no circumstances may
the design of the machine be modified
without the permission of the
manufacturer. Always use original
accessories. Non-authorized
modifications and/or accessories can
result in serious personal injury or the
death of the operator or others.
!
WARNING! Overexposure to vibration
can lead to circulatory damage or nerve
damage in people who have impaired
circulation. Contact your doctor if you
experience symptoms of overexposure
to vibration. Such symptoms include
numbness, loss of feeling, tingling,
pricking, pain, loss of strength, changes
in skin colour or condition. These
symptoms normally appear in the
fingers, hands or wrists. These
symptoms may be increased in cold
temperatures.
!
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.
IMPORTANT! No saw chain design eliminates the
danger of kickback.
!
WARNING! Any contact with a rotating
saw chain can cause extremely serious
injuries.
Содержание
- El 420 el 1
- Key to symbols 6
- Symbols on the machine 6
- Carton contents 7
- Key to symbols 7
- Symbols in the operator s manual 7
- Contents 8
- Dear customer 9
- Introduction 9
- Electrical safety 10
- General power tool safety warnings 10
- General safety precautions 10
- Personal safety 10
- Power tool use and care 10
- Work area safety 10
- Causes and operator prevention of kickback 11
- Chain saw safety warnings 11
- General safety precautions 11
- Service 11
- Before using a new chain saw 12
- Cables 12
- Electrical safety 12
- General safety precautions 12
- Always use common sense 13
- General safety precautions 13
- Important 13
- Machine s safety equipment 13
- Personal protective equipment 13
- Chain brake and front hand guard 14
- Chain catcher 14
- General safety precautions 14
- Power trigger lockout 14
- Will my chain brake always protect me from injury in the event of a kickback 14
- Will my hand always activate the chain brake during a kickback 14
- Will my inertia activated chain brake always activate during kickback in the event of a kickback 14
- Cutting equipment 15
- Cutting equipment designed to reduce kickback 15
- General rules 15
- General safety precautions 15
- Right hand guard 15
- Vibrations 15
- General safety precautions 16
- Sharpening your chain and adjusting depth gauge setting 16
- Tensioning the chain 16
- General safety precautions 17
- Lubricating cutting equipment 17
- Assembly 18
- Fitting the bar and chain 18
- Starting 19
- Starting and stopping 19
- Stopping 19
- Basic safety rules 20
- Before use 20
- General rules 20
- General working instructions 20
- Working techniques 20
- Basic cutting technique 21
- Working techniques 21
- Tree felling technique 22
- Working techniques 22
- Freeing a tree that has fallen badly 23
- How to avoid kickback 23
- What is kickback 23
- Working techniques 23
- Chain brake and front hand guard 24
- Chain catcher 24
- Checking maintaining and servicing chain saw safety equipment 24
- Cooling system 24
- General 24
- Maintenance 24
- Power trigger lockout 24
- Maintenance 25
- Maintenance schedule 25
- Technical data 26
- 00 25 0 65 27
- 5 32 4 0 8 27
- Applies to europe only 27
- Ec declaration of conformity 27
- Guide bar and saw chain combinations 27
- Inch mm inch mm 27
- Saw chain filing and file gauges 27
- Technical data 27
- Z ze6 6 z ze6 6 28
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