Causes And Operator Prevention Of Kickback - master mechanic TV510 Manual De Instrucciones

*TV510 / 386236 11/18/03
walk backwards, cutting whatever is in its path. Be aware of the time it takes for
the blade to stop after switch is released.
• NEVER hold piece being cut in your hands or across your leg. It is important to
support the work properly to minimize body exposure, blade binding, or loss of
control.
• Hold tool by insulated gripping surfaces when performing an 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 tool "live" and shock the
operator.
• When ripping, always use a rip fence or straight edge guide. This improves the
accuracy of the cut and reduces the chance for blade binding.
• Always use blades with correct size and shape (diamond vs. round) arbor
holes. Blades that do not match the mounting hardware of the saw will run
eccentrically, causing loss of control.
• Never use damaged or incorrect blade washers or bolts.The blade washers
and bolt were specially designed for your saw, for optimum performance and
safety of operation.

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 closing down, 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 tool misuse and/or incorrect operating procedures or
conditions and can be avoided by taking proper precautions as given below.
• Maintain a firm grip with both hands on the saw and position your body and
arm to allow you to resist KICKBACK forces. KICKBACK forces can be
controlled by the operator if proper precautions are taken.
• 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 action to eliminate the cause of blade binding.
• When restarting a saw in the workpiece, center the saw blade in the kerf and
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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.
• Support large panels to minimize 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.
• Do not use dull or damaged blade. Unsharpened or improperly set blades
produce narrow kerf causing excessive friction, blade binding and KICKBACK.
• 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.
• Use extra caution when making a "Pocket Cut" into existing walls or other
blind areas. The protruding blade may cut objects that can cause KICKBACK.
SYMBOLS
The label on your tool may include the following symbols.
V..............................................volts
A..............................................amperes
Hz............................................hertz
W ............................................watts
min ..........................................minutes
..........................................alternating current
............................................direct current
no ............................................no load speed
............................................Class II Construction
.../min......................................revolutions or reciprocation per minute
..........................................earthing terminals
................................
ADDITIONAL SAFETY RULES: CIRCULAR SAWS
• Snagging the lower guard on a surface below the material being cut can
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safety alert symbol