Operation - Black & Decker 1720 Instruction Manual

154791 / 1720 miter saw 2/2/00
NOTE: Certain special cuts will require that you manually raise the
guard. To do this, simply place your right thumb on the upper side of
the guard and roll the guard up just enough to clear the workpiece.
Never tie up or otherwise prevent the guard from operating normally.
The front section of the guard is louvered for visibility while cutting.
Although the louvers dramatically reduce flying debris, they are
openings in the guard and safety glasses should be worn at all times
when viewing through the louvers.
AUTOMATIC ELECTRIC BRAKE (120 VOLT ONLY)
Your saw is equipped with an automatic electric blade brake which
stops the saw blade within 5 seconds of trigger release. This is not
adjustable.
On occasion, there may be a delay after trigger release to brake
engagement. On rare occasions, the brake may not engage at all and
the blade will coast to a stop.
If a delay or "skipping" occurs, turn the saw on and off 4 or 5 times. If
the condition persists, have the tool serviced by an authorized Black
and Decker service center.
Always be sure the blade has stopped before removing it from the
kerf. The brake is not a substitute for guards or for ensuring your own
safety by giving the saw your complete attention.
Brushes
DISCONNECT PLUG FROM POWER SUPPLY
Inspect carbon brushes regularly by unplugging tool, removing the
brush inspection cap (21) and withdrawing the brush assembly. Keep
brushes clean and sliding freely in their guides. Always replace a
used brush in the same orientation in the holder as it was prior to its
removal. Carbon brushes have varying symbols stamped into their
If you have any questions, call 1-800-54-HOW-TO
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sides, and if the brush is worn down to the line closest to the spring,
they must be replaced. Use only identical BLACK AND DECKER
brushes. Use of the correct grade of brush is essential for proper
operation of electric brake. New brush assemblies are available at
Black & Decker service centers. The tool should be allowed to "run in"
(run at no load) for 10 minutes before use to seat new brushes. The
electric brake may be erratic in operation until the brushes are
properly seated (worn in).
While "running in" DO NOT TIE, TAPE, OR OTHERWISE LOCK THE
TRIGGER SWITCH ON. HOLD BY HAND ONLY.

Operation

Plug the saw into any household 60 Hz power source. Refer to the
nameplate for voltage. Be sure the cord will not interfere with your
work.
SWITCH
To turn the saw on, depress the trigger switch (20) shown in Figure
10. To turn the tool off, release the switch. There is no provision for
locking the switch on, but a hole is provided in the trigger for insertion
of a padlock to lock the saw off.
BODY AND HAND POSITION (SEE FIGURE 11)
Proper positioning of your body and hands when operating the miter
saw will make cutting easier, more accurate and safer. Never place
hands near cutting area. Place hands no closer than 6" from the
blade. Hold the workpiece tightly to the table and the fence when
cutting. Keep hands in position until the trigger has been released and
the blade has completely stopped. ALWAYS MAKE DRY RUNS
(UNPOWERED) BEFORE FINISH CUTS SO THAT YOU CAN
CHECK THE PATH OF THE BLADE. DO NOT CROSS HANDS, AS
SHOWN IN FIGURE 11.
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