Husqvarna K650 Cut-n-Break Operator's Manual page 12

Kickback
Kickback is a sudden, rearward motion of the saw that can
occur if the blades are stalled (pinched, jammed, twisted) in
the so called kickback zone. Most kickbacks are small and felt
as small "jerks" in the front handle. However, kickback can be
very powerful. If you are not paying attention or have a poor
grip the saw can be thrown all the way back at you.
WARNING! Kickback can be very sudden
!
and viloent, throwing the saw back at you. It
can cause serious or even fatal injuries. It is
vital you understand what causes kickback
and how to aviod it using proper cutting
techique.
Cause of kickback
Kickback is caused if you are cutting with the kickback zone
of the blade for example when cutting "upwards" or towards
you.
General rules
• Never cut upwards or towards you so that the kickback
zone becomes actively cutting.
• Always hold the machine in a firm grip with both hands.
Hold it so that the thumbs and fingers grip round the
handles.
• Keep a good balance and a firm foothold.
• When cutting vertically, always cut from the top of the cut
and down.
• Always cut at full throttle.
• Do not cut with the upper quadrant (kickback zone) of the
blade. Avoid twisting or pushing the blades sideways in
the cut. This can cause kickback.
• Take care when inserting the blade in an existing cut.
Make certain that the cut is wide enough and that the
blades are not angled in the cut. This can cause kickback.
• Stand at a comfortable distance from the work piece.
• Never cut above shoulder height.
• Never cut from a ladder. Use a platform or scaffold when
working at high altitude.
• Be on the alert in case the work piece moves or anything
else occurs, which could cause the cut to close and the
blades to jam.
12 –
English
SAFETY INSTRUCTIONS
Pull in
Pull in occurs when the blades' lower sections suddenly stop
or when the cut closes. (To avoid, see the instructions under
the heading "Basic rules" and "Jamming/rotation", here
below.).
Pinching/rotation
If the cut is pressed together this can lead to jamming. The
machine can be pulled down suddenly with a very powerful
jerk.
How to avoid pinching
Support the work piece in such a way that the cut remains
open during the cutting operation and when the cut is
finished.
Check the engine speed
Use a revolution counter regularly to check the engine speed
at the working temperature, at full throttle and without a load.