Stihl MSA 160 C-BQ Product Instruction Manual - Page 17

Reduced Kickback Bars, Bow Guides, To Avoid Kickback, A = Pull-in, Warning

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"Low kickback saw chain" is a chain which has met the kickback performance requirements of § 5.11.2.4 of ANSI B175.1-2000 (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 B175.1-2000. 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 B175.1-2000. 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. Warning! For a properly balanced saw and in order to comply with § 5.12.1 of ANSI B175.1-2000, use only bar lengths listed in the specifications chapter of the instruction manual for your chain saw powerhead. 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 chains 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: 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. English 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 chain. 4. Do not overreach. 5. Do not cut above shoulder height. 6. Begin cutting and continue at full speed. 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 chain. 11. Maintain saw chain properly. Cut with a correctly sharpened, properly tensioned chain at all times. 12. Stand to the side of the cutting path of the chain saw. A = Pull-in A Pull-in occurs when the chain on the bottom of the bar is suddenly stopped when it is pinched, caught or encounters 001BA037 KN MSA 160 C 15

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MSA 160 C
English
15
"Low kickback saw chain" is a chain
which has met the kickback
performance requirements of § 5.11.2.4
of ANSI B175.1-2000 (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
B175.1-2000.
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:
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 chain.
4.
Do not overreach.
5.
Do not cut above shoulder height.
6.
Begin cutting and continue at full
speed.
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 chain.
11.
Maintain saw chain properly. Cut
with a correctly sharpened, properly
tensioned chain at all times.
12.
Stand to the side of the cutting path
of the chain saw.
A = Pull-in
Pull-in occurs when the chain on the
bottom of the bar is suddenly stopped
when it is pinched, caught or encounters
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 B175.1-2000.
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!
For a properly balanced saw and in
order to comply with § 5.12.1 of ANSI
B175.1-2000, use only bar lengths listed
in the specifications chapter of the
instruction manual for your chain saw
powerhead.
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 chains will not signifi-
cantly reduce the risk of kickback injury
when used on a bow guide.
001BA037 KN
A