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Reduced
Kickback
Symmetrical
Guide Bar
aJl Radius Tip
Symmetdce3
Guide Bar_
[
Large Radius Tip
• Low-Kickbeck
Chain,
designed
with a
contoured
depth
gauge
and guard link
which deflect
kickback
force
and allow
wood to gradually ride into the cutter. Low-
Kickback
Chain
has met kickback
per-
formance
requirements
when tested on a
representative
sample of chain saws be-
low 3.8 cubic inch displacement
specified
in ANSI B175.1.
Contoured
Depth GaL_ge
_"_
[k Elongated
Guard Link
Deflects
ickback
force
Low-I_ckback
and allows wood
Chain
to gradually
ride
into
cutter
_L_C
an Obstruct
MatedeJ
Not a Low-
KJckbaek Chain
• Front Hand Guard, designed to reduce the
chance
of your left hand contacting
the
chain if your hand slips off the front handle-
bar.
• Position of front and rear handlebars,
de-
signed with distance between handles and
"in-line" with each other. The spread and
"in-line" position of the hands provided by
this design work together to give balance
and resistance
in controlling
the pivot of
the saw back toward the operator if kick-
back occurs.
CHAIN
BRAKE
AND CKA ANGLE
• Chain Brake, designed to stop the chain in
the event of kickback.
_WARNING:
WE DO NOT REP-
RESENT
AND YOU SHOULD
NOT AS-
SUME
THAT THE CHAIN
BRAKE WILL
PROTECT
YOU
IN THE EVENT
OF A
KICKBACK.
Kickback is a lightning fast ac-
tion which throws the bar and rotating chain
back and up toward the operator.
Kickback
Computed
kickback angle (CKA l Table
BAR
,,
/
MODEL
P/N
Length
CHAIN P/N
1900 LE
952044366
12
/
952051208
can be caused by allowing contact of the bar
tip in the danger zone with any hard ob ect.
Kickback can also be caused by pinching the
saw chain along the top of the guide bar. This
action may push the guide bar rapidly back
toward the operator.
Either of these events
may cause you to lose control of the saw
which could result in serious iniury or even
death.
DO NOT RELY UPON ANY OF THE
DEVICES BUILT INTO YOUR SAW.
YOU
SHOULD USE THE SAW PROPERLY AND
CAREFULLY
TO AVOID KICKBACK.
Re-
duced-kickback
guide bars and low-kick-
back saw chains
reduce the chance
and
magnitude
of kickback
and
are
recom-
mended. Your saw has a low kickback chain
and bar as original equipment.
Repairs on a
chain brake should be made by an autho-
rized servicing
dealer.
Take your unit to the
p!ane of purchase
if purchased
from a ser-
wcmg dealer, or to the nearest
authorized
master service dealer.
• Tip contact in some cases may cause a light-
ning fast reverse REACTION, kicking guide
bar up and back toward operator.
• Pinching the saw chain along the top of the
guide bar may push the guide bar rapidly
back toward the operator.
• Either of these reactions may cause you to
lose control of the saw which could result in
serious injury. Do not rely exclusively upon
devices built into your saw.
,_ WARNING:
Computed
kickback
angle (CKA) listed on your saw and listed in the
CKA table below represents angle of kickback
your bar and chain combinations
will have
when tested in accordance with CSA (Cana-
dian Standards Association)
and ANSI stan-
dards. When purchasing replacement bar and
chain, considerations
should be given to the
lower CKA values. Lower CKA values repre-
sent safer angles to the user, higher values in-
dicate more angle and higher kick energies.
Computed
angles represented
indicate total
energy and angle associated without activation
of the chain brake during kickback. Activated
angle represents chain stopping time relative to
activation angle of chain break and resulting
kick angle of saw. In all cases lower CKA val-
ues represent a safer operating environment
for the user.
The following
guide bar and chain combina-
tions meet kickback
requirements
of CSA
Standards
Z62.1,
Z623,
& ANSI
B175.1
when used on saws listed in this manual.
Use of bar and chain combinations
other
than those listed is not recommended
and
may not meet the CKA requirements
per
standard.
CKA without chain brake
4o
5
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