operation where the cutting tool may contact hidden wiring or its own cord.
Contact with a "live" wire will also make exposed metal parts of the power tool "live"
and shock the operator.
f)
When ripping always use a rip fence or straight edge guide.
This improves the
accuracy of cut and reduces the chance of blade binding.
g)
Always use blades with correct size and shape (diamond versus round) of
arbour holes.
Blades that do not match the mounting hardware of the saw will run
eccentrically, causing loss of control.
h)
Never use damaged or incorrect blade washers or bolt.
The blade washers
and bolt were specially designed for your saw, for optimum performance and safety
of operation.
Further safety instructions
Causes and operator prevention of kickback:
-
Kickback is a sudden reaction to a pinched, bound or misaligned saw blade,
causing an uncontrolled saw to lift up and out of the workpiece toward the operator;
-
When the blade is pinched or bound tightly by the kerf (gap in a cut) closing, the
blade stalls and the motor reaction drives the unit rapidly back toward the operator;
-
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 causing the blade to climb out of
the kerf and jump back toward the operator.
Kickback is the result of saw misuse and/or incorrect operating procedures or
conditions and can be avoided by taking proper precautions as given below.
a)
Maintain a firm grip with both hands on the saw and position your arms to
resist kickback forces. Position your body to either side of the blade, but not
in line with the blade.
Kickback could cause the saw to jump backwards, but
kickback forces can be controlled by the operator, if proper precautions are taken.
b)
When blade is binding, or when interrupting a cut for any reason, release the
trigger and hold the saw motionless in the material until the blade comes to
a complete stop. Never attempt to remove the saw from the work or pull the
saw backward while the blade is in motion or kickback may occur.
Investigate
and take corrective actions to eliminate the cause of blade binding.
c)
When restarting a saw in the workpiece, centre the saw blade in the kerf and
check that saw teeth are not engaged into the material.
If saw blade is binding,
it may walk up or kickback from the workpiece as the saw is restarted.
d)
Support large panels to minimise the risk of blade pinching and kickback.
Large panels tend to sag under their own weight. Supports must be placed under
the panel on both sides, near the line of cut and near the edge of the panel.
e)
Do not use dull or damaged blades.
Unsharpened or improperly set blades
produce a narrow kerf, causing excessive friction, blade binding and kickback.
f)
Blade depth and bevel adjusting locking levers must be tight and secure
before making cut.
If blade adjustment shifts while cutting, it may cause binding
and kickback.
g)
Use extra caution when making a "plunge cut" into existing walls or other
blind areas.
The protruding blade may cut objects that can cause kickback.