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Kickback - causes and related safety instructions
- Kickback is the sudden reaction resulting from a pinched, jammed, or misaligned saw blade that causes an
uncontrolled saw to lift off and move out of the workpiece toward the operator.
- If the saw blade is pinched or jammed in the closing kerf, it will stall and the motor power will kick the saw
back toward the operator.
- If the saw blade is twisted or misaligned in the saw cut, the teeth of the rear edge of the saw blade can get
pinched in the wood surface, causing the saw blade to move out of the kerf and the saw to jump back
toward the operator.
Fig. 4: Kickback of the machine
Kickback is the result of incorrect or improper use of the saw. It can be prevented by taking appropriate
precautions, as described below.
- Hold the saw firmly with both hands. Position your arms such that you can withstand kickback
forces. Be sure that you are always positioned such that the saw blade is at the side of your body,
never in line with it. In the event of a kickback, the circular saw can jump backward. However, the operator
can take appropriate precautions to control the kickback forces.
- If the saw blade jams or when you stop working, switch off the saw and hold it steady in the material
until the saw blade is stopped. Never try to remove the saw from the workpiece or pull it backwards
as long as the saw blade is moving. This can cause a kickback. Determine and eliminate the cause of
jamming of the saw blade.
- To restart a saw that sits in the workpiece, center the saw blade in the kerf and ensure that the saw
teeth are not jammed in the workpiece. A jammed saw blade can move out of the workpiece or cause a
kickback when the saw is restarted.
10
K85Ec / KSS80Ec 370
01/2022
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