John Deere PA01186 CS71 - Manual (Page 8)

8 English
A
Understanding Your Chain Saw Safety
Devices
Safe-T-Tip® Anti-Kickback Nose Guard
The SAFE-T-TIP® (A) prevents kickback from happening, be-
cause it covers the tip of the bar where kickback is generated.
Inexperienced persons should never attempt any kind of cutting
where the SAFE-T-TIP® would have to be removed from the bar
tip.
Those users, such as professional loggers, who may need to
draw the tip through the cut, make boring cuts, or cut logs bigger
than the bar length should replace the SAFE-T-TIP® as soon as
those cuts are complete. When cutting with it removed, the user
must rely on careful use of the proper techniques as shown in the
manual to avoid kickback.
NOTE: See Maintenance-Bar and Chain Section, for install-
ing the Safe-T-Tip® nose guard.
SAFETY
Low Kickback Saw Chain
The rakers (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 replace-
ment chain that is equivalent to original chain or has been
certified as low kickback chain per ANSI B175.1.
Low kickback saw chain is chain that has met the kickback
performance requirements of ANSI B175.1 - 1991 (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. specified in ANSI B175.1
- 1991.
Guide Bars
Generally, guide bars with small radius tips have somewhat
lower kickback potentials.
John Deere gasoline saws meet the kickback-reduction require-
ments of ANSI B175.1 without requiring small radius tip bars.
When making a replacement be sure to order one of the JOHN
DEERE bars listed for your saw in this operator's manual. The
proper size SAFE-T-TIP® nose guard comes installed on the
bar. Use only guide bars that have a provision for mounting the
SAFE-T-TIP®.
Chain Brake
Chain brakes are designed to rapidly stop the chain from
rotating. When the chain brake lever / hand guard is pushed
toward the bar, the chain should stop immediately . A chain
brake does not prevent kickback.
B) RUN POSITION
C) BRAKE POSITION
Chain brake should be cleaned and tested daily. Clean the
chain brake per the Maintenance-Chain Brake Section and
test per the Operation-Chain Brake Operation Section.
WARNING
Even with daily cleaning of the mechanism, the depend-
ability of a chain brake to perform under field conditions
cannot be certified. Keep the Safe-T-Tip® nose guard on
your saw's guide bar, and use proper cutting techniques.
Run Position
(B)
Brake
Position
(C)