WARNING
Some STIHL chain saws are equipped with a cata- lytic converter, which is designed to reduce the exhaust emissions of the engine by a chemical process in the muffler. Due to this process, the muffler does not cool down as rapidly as con- ventional mufflers when the engine returns to idle or is shut off. To reduce the risk of fire and burn injuries when using a cat- alytic converter, always set your chain saw down in the upright position and never locate it where the muffler is near dry brush, grass, wood chips or other combustible materi- als while it is still hot.
DANGER
Do not rely on the chain saw ’s insulation against electric shock. To reduce the risk of electrocution, never operate this chain saw in the vicinity of any wires or cables (power, etc.) which may be carry- ing electric current.To reduce risk of electrocu- tion, take extra precautions when cutting near power lines. Have the power switched off before starting cutting work in the immediate vicinity of power lines.
REACTIVE FORCES INCLUDING KICKBACK
WARNING
Reactive forces may occur any time the chain is rotating. Reactive forces can cause serious personal injury.
English
stopped by contact with any solid object such as a log or branch or is pinched, the reactive forces may occur instantly.
These reactive forces may result in loss of control, which, in turn, may cause serious or fatal injury. An understanding of the causes of these reactive forces may help you avoid the element of surprise and loss of control. Surprise contributes to accidents.
The most common reactive forces are:
–kickback,
–pushback,
–
WARNING
Kickback:
Kickback may occur when the moving saw
chain near the upper
quadrant of the bar nose contacts a solid object or is pinched.
When this occurs, the energy driving the saw chain can create a force that moves the chain saw in a direction opposite to the saw chain movement at the point where the saw chain is slowed or stopped. This may fling the bar up and back in a lightning fast reaction mainly in the plane of the bar and can cause
001BA257 KN
The powerful force used to cut wood can be reversed and work against the operator. If the rotating saw chain is suddenly and significantly slowed or
MS 241
severe or fatal injury to the operator.
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