Devices For Reducing The Risk Of Kickback; Pushbck - Stihl 015 Instruction Manual / Owners Manual

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Devices for reducing the risk of kickback
STIHL has developes a chain stopping system designed to
reduce the risk of injury in a kickback situation. The device
is called a Quickstop. The Quickstop is available as an
option on many STIHL saws. This device does not prevent
kickback, but will stop the chain in some kickback situations
if the operator's left hand is in position to activate the Quick-
stop lever by contacting the front hand guard.
When a kickback occurs, the chain saw rotates in the
plane of the bar. The left hand, when properly gripping
the front handle behind the front handguard should engage
the Quickstop lever. This activates the Quickstop and stops
the chain (see ill. 14).
STIHL has developed guide bars with a small radius nose.
These guide bars are designed to reduce the kickback
tendency and are available as an option.
STIHL has developed chains with cutters whose configu-
ration are designed to reduce kickback forces. These
chains are available as an option.
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However, even if your saw has a "Quickstop" a narrow
nose bar or a guard-link or a pro-guard chain, it does not
guarantee that you will not be injured by a "kickback"
arid therefore, you should observe all of the precautions
to prevent kickback discussed previously.
Wammgl
Chain saw kickback may cause serious or fatal injury.
To reduce the risk of kickback injuries STIHL recommends
that you equip your saw with a narrow nose bar, low profile
chain or other chain designed to reduce kickback forces,
and a STIHL QuicRstop.
Pushback:
Pushback occurs when the chain on the top of the bar is
suddenly stopped when it is pinched, caught or encounters
a foreign object in the wood. The reaction of the chain
drives the saw straight back toward the operator causing
loss of saw control. Push back frequently occurs when the
top of the bar is used for cutting (see ill. 15).