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9
WARNING
: If the chain brake is clogged
with wood chips, the function of the chain
brake may deteriorate. Always keep the
device clean.
Low Kickback Saw Chain
The ramp-shaped depth gauges ahead of each
cutter can minimize the force of a kickback
reaction by preventing the cutters from digging
in too deeply at the kickback zone. Only use
a replacement chain that is equivalent to the
original chain or has been certied as a low
kickback chain per ANSI B175.1. A low kickback
tooth saw chain is a chain that has met the
kickback performance requirements of ANSI
B175.1 (American National Standard for Power
Tools-Gasoline-Powered Chain Saws-Safety
Requirements) when tested on the representative
sample of chain saws below 3.8 c.i.d. specied in
ANSI B175.1.
The bumper drive link (Fig. 2) also helps deliver
low-kickback performance.
Bumper drive link Cutter type
Fig.2
CAUTION:
As saw chains are sharpened
during their useful life, they lose some of
the low kickback qualities and extra caution
should be used.
GUIDE BAR
This saw comes equipped with a guide bar that
has a small radius nose. Small radius noses
generally have less potential for kickback. When
replacing the guide bar, be sure to order the bar
listed in this manual.
ADDITIONAL WARNINGS
•
With a basic understanding of kickback
(Fig. 3-5), you can reduce or eliminate
the element of surprise.
Sudden surprise
contributes to accidents.
Rotational
kickback
Fig.3
Kickback
danger zone
Fig.4
Linear kickback
Kickback
Pinch
Fig.5
•
Make sure that the area in which you are
cutting is free from obstructions.
Do not
let the nose of the guide bar contact a log,
branch, fence, or any other obstruction that
could be hit while you are operating the saw.
•
Inspect the work piece for nails, wire, or
other foreign objects prior to cutting.
•
Plan the work, ensuring an obstacle-free
work area and, in the case of felling, at
least one escape path from the falling
tree.
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