Stihl MSA 300.0 Notice D'emploi page 13

6 Kickback and Other Reactive Forces
► Never attempt to remove, modify or disable
the front hand guard or any other compo‐
nent of the chain brake.
■ No Quickstop or other chain brake device pre‐
vents kickback. These devices are designed to
reduce the risk of injury, if activated, in certain
kickback situations. To reduce the risk of
severe personal injury or death from kickback:
► Always follow the instructions in this manual
and follow good working technique. For
example, position your body clear of the
cutting attachment whenever the motor is
running. Stand to the left of the cut while
bucking, outside of the cutting plane. See
chapter Holding and Controlling the Chain
Saw, 5.5.2.
► Maintain as much distance as possible, and
never less than 45 degrees, between the
bar and your body to ensure that the Quick‐
stop has sufficient time to activate and stop
the chain before reaching any part of your
body.
► Follow the other precautions provided in
chapter 5.3.
■ An improperly maintained chain brake may
increase the time needed to stop the chain
after activation, or may not activate at all. For
the Quickstop to reduce the risk of kickback
injury, it must be properly maintained and in
good working order.
► Read and follow the instructions on engag‐
ing and disengaging the chain brake,
and maintaining and repairing it,
2. Low Kickback Saw Chain and Reduced Kick‐
back Bars
STIHL offers a variety of guide bars and chains.
STIHL reduced kickback bars and low kickback
chains are designed to reduce the risk of kick‐
back injury. Other chains are designed to ach‐
ieve higher cutting performance or sharpening
ease, but are more prone to kickback and may
kick back with more energy, making it more diffi‐
cult to control the chain saw.
STIHL has developed a color code system to
help you identify the STIHL reduced kickback
bars and low kickback chains.
– Cutting attachments with green labels on the
packaging are designed to reduce the risk of
kickback injury.
– Matching green-marked or labeled chain saws
with green-labeled bars and green-labeled
chains provides compliance with the computed
kickback angle requirements of the chain saw
standards when the products are in their origi‐
nal condition.
0458-009-8202-B
– Products with yellow labels are for users with
extraordinary cutting needs, who have experi‐
ence and specialized training for dealing with
kickback.
STIHL recommends the use of its green-labeled
reduced kickback bars, green-labeled low kick‐
back chains and a chain saw equipped with a
STIHL Quickstop chain brake for both experi‐
enced and inexperienced operators.
STIHL recommends green-labeled bars and
chains for all chain saws. See your "STIHL Bar
and Chain Information" leaflet for details.
New bar and chain combinations may be devel‐
oped after publication of this literature, which will,
in combination with certain electric chain saws,
comply with the chain saw standards as well.
WARNING
■ Use of bar and chain combinations not listed
in the STIHL Bar and Chain Information leaflet
(or other combinations that do not comply with
the chain saw standards) may increase kick‐
back forces as well as the propensity for kick‐
back, and increase the risk of kickback injury.
► If you are unsure which bar and chain com‐
bination to select, ask your authorized
STIHL servicing dealer to properly match
your chain saw with the appropriate bar and
chain combination to reduce the risk of kick‐
back injury.
14,
■ Reduced kickback bars and low kickback
14.3.
chains do not prevent kickback, but they are
designed to reduce the risk of kickback injury.
► STIHL recommends green-labeled bars and
green-labeled chains for all chain saws and
all users.
■ Even if your saw is equipped with a Quickstop
chain brake, a reduced kickback bar and/or
low kickback chain, this does not eliminate the
risk of injury from kickback.
► Observe all safety precautions discussed in
this manual to avoid kickback situations.
a. Low Kickback Saw Chain
Some types of chain have specially designed
components to reduce the propensity for kick‐
back and the force of kickback if it occurs. STIHL
has developed low kickback chain for your chain
saw.
A "low kickback chain" is a chain that has met
the kickback performance requirements of
CSA Z62.3 when tested according to the provi‐
sions specified in CSA Z62.3.
English
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