Craftsman 7-1/4 Operation Manual - Page 16

CAUSES, IT AND WAYS TO HELP PREVENT, IT Fig. 4, The Causes of Kickback

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KICKBACK...WHAT CAUSES IT AND WAYS TO HELP PREVENT IT (Fig. 4) The Causes of Kickback Fig. 4 \ Correct Blade Depth 1, Kickback is a sudden reaction to a pinched, bound or misaligned saw blade, which causes an uncontrolledsaw to lift up and out of the workpiece and toward the operator, 2. When the blade is pinched or bound tightly by the kerr closing down, the blade stalls and the motor reaction drives the unit rapidly back towards the operator. 3. If the blade becomes twisted or misaligned in the cut, the teeth at the back edge of the blade can dig into the top surface of the wood. This causes the blade to climb out of the kerr and jump back towards the operator, 4. Sawing into knots or nails in the workpiece can cause Kickback. 5. Sawing into wet or warped lumber can cause Kickback (see Fig. 5a)o 6, Forcing a cut, or not supporting the workpiece correctly can cause Kickback (see Fig. 5a). 7. Kickback is a result of toot misuse and/or incorrectoperating procedures or conditions It can be avoided by taking the proper precautions, on page !7. Fig. 5 Right UlUUll,i, ii Fig, 5a Blade Is Set Too Deep 16 -L--

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KICKBACK...WHAT
CAUSES
IT AND WAYS TO HELP PREVENT
IT (Fig. 4)
The Causes of Kickback
\
Correct Blade Depth
Blade Is Set Too
Deep
Fig. 4
1, Kickback
is
a sudden reaction
to a
pinched,
bound or misaligned saw blade, which
causes an
uncontrolled
saw to lift up and
out of
the
workpiece and toward the operator,
2. When the blade is pinched or bound tightly
by the kerr closing down, the blade stalls
and the motor reaction drives the unit rapidly
back towards the
operator.
3. If the blade becomes twisted or misaligned
in
the cut, the teeth at the back edge of the
blade can dig into the top surface of the
wood. This causes
the
blade
to
climb out
of the kerr and jump back towards the operator,
4. Sawing into knots or nails in the workpiece
can cause Kickback.
5. Sawing into wet or warped lumber can
cause Kickback (see Fig. 5a)o
6, Forcing a cut, or not supporting the workpiece
correctly can cause Kickback (see Fig. 5a).
7. Kickback
is
a result of toot misuse and/or
incorrect
operating procedures or conditions
It can be avoided by taking the proper
precautions, on page !7.
Fig. 5
Right
UlUUll,i,
i
i
Fig, 5a
16
-L--