Safety Manual

19
ENGLISH
KICKBACK/ OPTIONAL KICK GUARD
TM
Low-kickback chain may gradually lose some of its kickback-reduction ability
even when properly led. The following items will cause it to lose its kickback
reduction ability rapidly:
• Depth gauges not set uniformly to correct depth.
• Cutters dull or uneven in ling angle or length.
• Cutters have been led to a forward hook.
• Chain runs too loose on the bar.
• Worn chain repaired with new cutters or side links, causing some cutters to
take a larger bite than the others.
NOTE: Proper chain tension cannot be maintained if:
• Drive sprocket is worn.
• Guide bar is improperly clamped to the chain saw.
• Tension adjuster has not engaged the guide bar, thus causing the guide-bar
to shift.
• Bar rails are in poor condition.
• Guide bar and chain are improperly lubricated.
REDUCED-KICKBACK GUIDE BAR
In general, guide bars that meet this
requirement, have small or reduced-radius
noses. All guide bars with reduced nose
radius have been machined to accept a bar
tip guard. (Some large radius bars may not
accept a tip guard.)
REDUCED-KICKBACK GUIDE BAR
AND OPTIONAL KICK GUARD
TM
DEVICE
These devices both provide strong protection
against kickback. As stated previously, there
can be no rotational kickback when the
optional Kick Guard device is properly assembled on the bar nose. Linear
kickback will be stopped if the device is drawn against the wood. Your chain
saw may be equipped with either the more common symmetrical nose bar or
an asymmetrical nose bar. The symmetrical nose bar can have a sprocket or
welded tip. The asymmetrical nose bar is shaped differently and is commonly
referred to as a “banana-nose bar.” The ability of these bars to partially
reduce kickback is possible because the kickback-generating zone of the bar
nose is small. If you wish to equip your chain saw with any bar other than
manufacturer-approved bars, be sure it falls within limitations specied for your
chain saw, is designated “Reduced-kickback Guide Bar,” and is machined to
permit installation of an optional Kick Guard device. The optional Kick Guard
device works properly only when it ts correctly on the bar. A bent or damaged
optional Kick Guard device must be replaced. Do not use a replacement guide
bar that does not have proper mounting holes for the optinoal Kick Guard
device.
SYMMETRICAL REDUCED
RADIUS
BANNANA NOSE REDUCED
RADIUS