Bort 98296198, User Manual

Page: 5 / 44

5
Bar
The smaller the tip radius the lower the chance of kick-
back.
Chain
A chain is made up of a number of links, which are
available in standard and low-kickback versions.
IMPORTANT! No saw chain design elimi-
nates the danger of kickback.
WARNING! Any contact with a rotating saw
chain can cause extremely serious injuries.
SHARPENING YOUR CHAIN AND ADJUST-
ING DEPTH GAUGE SETTING
WARNING! Always wear gloves, when work-
ing with the chain, in order to protect your
hands from injury.
General information on sharpening cutting teeth
● Never use a blunt chain. When the chain is blunt
you have to exert more pressure to force the bar
through the wood and the chips will be very small. If
the chain is very blunt it will produce wood powder
and no chips or shavings.
● A sharp chain eats its way through the wood and
produces long, thick chips or shavings.
● The cutting part of the chain is called the cutter and
consists of a cutting tooth and the depth gauge.
The cutters cutting depth is determined by the dif-
ference in height between the two (depth gauge set-
ting).
When you sharpen a cutting tooth there are four impor-
tant factors to remember.
1 Filing angle
2 Cutting angle
3 File position
4 Round
fi le diameter
It is very dif fi cult to sharpen a chain correctly without the
right equipment. We recommend that you use our fi le
gauge. This will help you obtain the maximum kickback
reduction and cutting performance from your chain.
WARNING! Departure from the sharpening
instructions considerably increases the risk
of kickback.
● Check that the chain is correctly tensioned. A slack
chain will move sideways, making it more dif fi cult to
sharpen correctly.
● Always fi le cutting teeth from the inside face. Re-
duce the pressure on the return stroke. File all the
teeth on one side
fi rst, then turn the chain saw over
and fi le the teeth on the other side.
● File all the teeth to the same length. When the length
of the cutting teeth is reduced to 4 mm (0.16") the
chain is worn out and should be replaced.
WARNING! The risk of kickback is increased
if the depth gauge setting is too large!
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
fi ngers, hands or
wrists. These symptoms may be increased in cold tem-
peratures.
Stop switch
Use the stop switch to switch off the engine.
Muf fl er
The muf fl er is designed to reduce noise levels and to
direct exhaust fumes away from the user.
WARNING! The exhaust fumes from the en-
gine are hot and may contain sparks which
can start a
fi re. Never start the machine in-
doors or near combustible material!
CAUTION! The muf fl er gets very hot during
and after use. This also applies during idling.
Be aware of the
fi re hazard, especially when
working near fl ammable substances and/or vapours.
WARNING! Never use a saw without a muf-
fl er, or with a damaged muf fl er. A damaged
muf fl er may substantially increase the noise
level and the fi re hazard. Keep fi re fi ghting equipment
handy. If a spark arrestor screen is required in your ar-
ea, never use the saw without or with a broken spark
arrestor screen.
CUTTING EQUIPMENT GENERAL RULES
● Only use cutting equipment recommended by us!
● Keep the chain’s cutting teeth properly sharpened!
● 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.
● Keep the chain properly tensioned! If the chain is
slack it is more likely to jump off and lead to in-
creased wear on the bar, chain and drive sprocket.
● 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 wellmain-
tained you can reduce the effects of kickback.