SAFETY INSTRUCTIONS
Chain drive sprocket
WARNING! Most chain saw accidents
!happen when the chain touches the
operator.
The clutch drum is Ţtted with one of the following drive Wear personal protective equipment. See
sprockets:instructions under the heading Personal
protective equipment.
A Spur sprocket (the chain sprocket is welded on the drum)
Do not tackle any job that you feel you are
B Rim sprocket (replaceable)not adequately trained for. See instructions
under the headings Personal protective
equipment, How to avoid kickback, Cutting
equipment and General working
instructions.
Avoid situations where there is a risk of
Regularly check the degree of wear on the drive sprocket. kickback. See instructions under the
heading Machine2s safety equipment.
Replace if wear is excessive. Replace the drive sprocket
whenever you replace the chain.Use the recommended protective equipment
and check its condition. See instructions
Barunder the heading General working
instructions.
Check that all the chain saw safety features
are working. See instructions under the
Check regularly:headings General working instructions and
Y Whether there are burrs on the edges of the bar. Remove General safety precautions.
these with a Ţle if necessary.
How to avoid kickback
WARNING! Kickback can happen very
suddenly and violently; kicking the chain
!saw, bar and chain back at the user. If this
Y Whether the groove in the bar has become badly worn. happens when the chain is moving it can
Replace the bar if necessary.cause very serious, even fatal injuries. It is
vital you understand what causes kickback
and that you can avoid it by taking care and
using the right working technique.
Y Whether the tip of the bar is uneven or badly worn. If a
hollow forms on the underside of the bar tip this is due to What is kickback?
running with a slack chain.
The word kickback is used to describe the sudden reaction
that causes the chain saw and bar to jump off an object when
the upper quadrant of the tip of the bar, known as the kickback
zone, touches an object.
Y To prolong the life of the bar you should turn it over daily.
Kickback always occurs in the cutting plane of the bar.
Normally the chain saw and bar are thrown backwards and
upwards towards the user. However, the chain saw may move
in a different direction depending on the way it was being used
when the kickback zone of the bar touched the object.
14 � English |
ACEC
