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•
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.
•
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
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.
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.
IMPORTANT! No saw chain design eliminates the
danger of kickback.
WARNING! Any contact with a rotating
!
saw chain can cause extremely serious
injuries.
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
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Length (inches/cm)
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Number of teeth on bar tip sprocket (T).
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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. (14)
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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.
•
Bar groove width (inches/mm). The groove in the bar
must match the width of the chain drive links.
Running H/F 2 Rev. 2 2017-04-28
GENERAL SAFETY PRECAUTIONS
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Chain oil hole and hole for chain tensioner. The bar
must be matched to the chainsaw design. (15)
Saw chain
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Chain pitch (inches) (14)
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Drive link width (mm/inches) (16)
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Number of drive links. (17)
Sharpening your saw chain and adjusting
depth gauge setting
General information on sharpening cutting teeth
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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 (A) and the depth gauge
(B). The cutters cutting depth is determined by the
difference in height between the two (depth gauge
setting). (18)
When you sharpen a cutting tooth there are four important
factors to remember.
1
Filing angle (19)
2
Cutting angle (20)
3
File position (21)
4
Round file diameter
It is very difficult to sharpen a chain correctly without the
right equipment. We recommend that you use our file
gauge. This will help you obtain the maximum kickback
reduction and cutting performance from your chain. (22)
See instructions under the heading Technical data for
information about sharpening your chain.
WARNING! Departure from the
!
sharpening instructions considerably
increases the risk of kickback.
Sharpening cutting teeth
To sharpen cutting teeth you will need a round file and a
file gauge. See instructions under the heading Technical
data for information on the size of file and gauge that are
recommended for the chain fitted to your chainsaw.
•
Check that the chain is correctly tensioned. A slack
chain will move sideways, making it more difficult to
sharpen correctly.
•
Always file cutting teeth from the inside face. Reduce
the pressure on the return stroke. File all the teeth on
one side first, then turn the chainsaw and file the teeth
on the other side.
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English
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