Stihl MS 311 Product Instruction Manual - Page 16

of ANSI B 175.1-2000 Gasoline - new

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English when the products are in their original condition. Products with yellow decals or labels are for users with extraordinary cutting needs and experience and specialized training for dealing with kickback. STIHL recommends the use of its green labeled reduced kickback bars, green labeled low kickback chains and a STIHL Quickstop chain brake for both experienced and inexperienced chain saw users. Please ask your STIHL dealer to properly match your powerhead with the appropriate bar/chain combination to reduce the risk of kickback injury. Green labeled bars and chains are recommended for all powerheads. Warning! Use of other, non-listed bar/chain combinations may increase kickback forces and the risk of kickback injury. New bar/chain combinations may be developed after publication of this literature, which will, in combination with certain powerheads, comply with § 5.11 of ANSI B 175.1-2000. Check with your STIHL dealer for such combinations. Warning! Reduced kickback bars and low kickback chains do not prevent kickback, but they are designed to reduce the risk of kickback injury. They are available from your STIHL dealer. Warning! Even if your saw is equipped with a Quickstop, a reduced kickback bar and/or low kickback chain, this does not eliminate the risk of injury by kickback. Therefore, always observe all safety precautions to avoid kickback situations. Low kickback chain Some types of saw chain have specially designed components to reduce the force of nose contact kickback. STIHL has developed low kickback chain for your powerhead. "Low kickback saw chain" is a chain which has met the kickback performance requirements of § 5.11.2.4 of ANSI B 175.1-2000 (GasolinePowered Chain Saws-Safety Requirements) when tested in its original condition on a selected representative sample of chain saws below 3.8 cubic inches (62 cm³) displacement specified in ANSI B 175.1-2000. Warning! There are potential powerhead and bar combinations with which low kickback saw chains can be used which have not been specifically certified to comply with the 45° computer derived kickback angle of § 5.11 of ANSI B 175.1-2000. Some low kickback chains have not been tested with all powerhead and bar combinations. Warning! A dull or improperly sharpened chain may reduce or negate the effects of the design features intended to reduce kickback energy. Improper lowering or sharpening of the depth gauges or shaping of the cutters may increase the chance and the potential energy of a kickback. Always cut with a properly sharpened chain. Reduced kickback bars STIHL green labeled reduced kickback bars are designed to reduce the risk of kickback injury when used with STIHL green labeled low kickback chains. Warning! When used with other, more aggressive chains, these bars may be less effective in reducing kickback. Bow Guides Warning! Do not mount a bow guide on any STIHL chain saw. Any chain saw equipped with a bow guide is potentially very dangerous. The risk of kickback is increased with a bow guide because of the increased kickback contact area. Low kickback chain will not significantly reduce the risk of kickback injury when used on a bow guide. To avoid kickback The best protection from personal injury that may result from kickback is to avoid kickback situations: 14 MS 311, MS 391

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MS 311, MS 391
English
14
when the products are in their original
condition. Products with yellow decals or
labels are for users with extraordinary
cutting needs and experience and
specialized training for dealing with
kickback.
STIHL recommends the use of its
green labeled reduced kickback bars,
green labeled low kickback chains
and a STIHL Quickstop chain brake
for both experienced and
inexperienced chain saw users.
Please ask your STIHL dealer to
properly match your powerhead with the
appropriate bar/chain combination to
reduce the risk of kickback injury. Green
labeled bars and chains are
recommended for all powerheads.
Low kickback chain
Some types of saw chain have specially
designed components to reduce the
force of nose contact kickback. STIHL
has developed low kickback chain for
your powerhead.
"Low kickback saw chain" is a chain
which has met the kickback
performance requirements of § 5.11.2.4
of ANSI B 175.1-2000 (Gasoline-
Powered Chain Saws–Safety
Requirements) when tested in its
original condition on a selected
representative sample of chain saws
below 3.8 cubic inches (62 cm³)
displacement specified in ANSI
B 175.1-2000.
Reduced kickback bars
STIHL green labeled reduced kickback
bars are designed to reduce the risk of
kickback injury when used with STIHL
green labeled low kickback chains.
Bow Guides
To avoid kickback
The best protection from personal injury
that may result from kickback is to avoid
kickback situations:
Warning!
Use of other, non-listed bar/chain com-
binations may increase kickback forces
and the risk of kickback injury. New
bar/chain combinations may be devel-
oped after publication of this literature,
which will, in combination with certain
powerheads, comply with § 5.11 of
ANSI B 175.1-2000. Check with your
STIHL dealer for such combinations.
Warning!
Reduced kickback bars and low kick-
back chains do not prevent kickback,
but they are designed to reduce the risk
of kickback injury. They are available
from your STIHL dealer.
Warning!
Even if your saw is equipped with a
Quickstop, a reduced kickback bar
and/or low kickback chain, this does not
eliminate the risk of injury by kickback.
Therefore, always observe all safety
precautions to avoid kickback
situations.
Warning!
There are potential powerhead and bar
combinations with which low kickback
saw chains can be used which have not
been specifically certified to comply with
the 45° computer derived kickback
angle of § 5.11 of ANSI B 175.1-2000.
Some low kickback chains have not
been tested with all powerhead and bar
combinations.
Warning!
A dull or improperly sharpened chain
may reduce or negate the effects of the
design features intended to reduce kick-
back energy. Improper lowering or
sharpening of the depth gauges or
shaping of the cutters may increase the
chance and the potential energy of a
kickback. Always cut with a properly
sharpened chain.
Warning!
When used with other, more aggressive
chains, these bars may be less effective
in reducing kickback.
Warning!
Do not mount a bow guide on any
STIHL chain saw. Any chain saw
equipped with a bow guide is potentially
very dangerous. The risk of kickback is
increased with a bow guide because of
the increased kickback contact area.
Low kickback chain will not significantly
reduce the risk of kickback injury when
used on a bow guide.