Stihl MS 311 Manual De Instrucciones página 19

eliminate the risk of injury by kickback.
Therefore, always observe all safety
precautions to avoid kickback situations.
Low Kickback Saw Chain
Some types of saw chains have
specially designed components to
reduce the force of nose contact
kickback. STIHL has developed low
kickback saw chain for your chain saw.
A "low kickback saw chain" is a saw
chain that has met the kickback
performance requirements of
ANSI/OPEI B175.1-2012 when tested
according to the provisions specified in
ANSI/OPEI B175.1-2012.
WARNING
There are potential chain saw 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 the chain saw standard. Some
low kickback saw chains have not been
tested with all chain saw and bar
combinations.
WARNING
A blunt or incorrectly sharpened saw
chain may reduce or negate the effects
of the design features intended to
reduce kickback energy. Improper
lowering or sharpening of the depth
gauges as well as changing the shape of
the cutters may increase the risk and the
energy of kickback. Always cut with a
properly sharpened saw chain.
MS 311, MS 391
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 saw chains.
WARNING
When used with other, more aggressive
saw chains, these bars may be less
effective in reducing kickback.
WARNING
For a properly balanced saw and in
order to comply with the chain saw
standard, use only bar lengths listed in
the specifications chapter of the
instruction manual for your chain saw.
To avoid kickback
The best protection from personal injury
that may result from kickback is to avoid
kickback situations:
1. Hold the chain saw firmly with both
hands and maintain a secure grip.
Don't let go.
2. Be aware of the location of the guide
bar nose at all times.
3. Never let the nose of the guide bar
contact any object. Do not cut limbs
with the nose of the guide bar. Be
especially careful near wire fences
and when cutting small, tough
limbs, small size brush and saplings
which may easily catch the saw
chain.
4. Don't overreach.
5. Don't cut above shoulder height.
6. Begin cutting and continue at full
throttle.
7. Cut only one log at a time.
8. Use extreme caution when
reentering a previous cut.
9. Do not attempt to plunge cut if you
are not experienced with these
cutting techniques.
10. Be alert for shifting of the log or
other forces that may cause the cut
to close and pinch the saw chain.
11. Maintain saw chain properly. Cut
with a correctly sharpened, properly
tensioned saw chain at all times.
12. Stand to the side of the cutting path
of the chain saw.
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 saw chain will not
significantly reduce the risk of kickback
injury when used on a bow guide.
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