![background image](http://html.mh-extra.com/html/wen/3920/3920_manual_956543016.webp)
16
ON/OFF & SPEED CONTROL SWITCH (Fig. 16)
Always wait for the saw to come to a complete stop before
restarting.
1. To turn the saw on, flip the ON/OFF switch to ON (2).
When first starting the saw, it is best to move the speed
control knob (1) to the middle speed position.
2. Adjust the blade speed to the desired setting between
400 to 1600 strokes per minute (SPM). Turning the
control knob clockwise increases speed; turning it coun-
terclockwise reduces speed.
3. To turn the saw off, flip the ON/OFF switch back to
OFF (2) in. Note: You can lock the scroll saw by remov-
ing the tip of the switch. Just pry off the switch lock with
your fingernails to prevent accidental operation.
WARNING: To avoid injury from accidental start-ups, always turn the switch OFF and unplug
the scroll saw before moving the tool, replacing the blade, or making adjustments.
FREEHAND CUTTING (Fig. 17)
1. Lay out desired design, or secure design to the
work piece.
2. Raise the blade guard foot (1) by loosening the
height adjustment knob (2).
3. Position the work piece against the blade and
place the blade guard foot against the top surface of
the work piece.
4. Secure the blade guard foot (1) by tightening the
height adjustment knob (2).
5. Remove the work piece from the blade prior to
turning the scroll saw ON.
CAUTION
: In order to avoid uncontrollable lifting of
the work piece and to reduce blade breakage, do not
turn the switch on while the work piece is against the
blade.
6. Slowly feed the work piece into the blade by guiding and pressing the work piece down against the
table.
CAUTION:
Do not force the leading edge of the work piece into the blade. The blade will deflect, reduc-
ing accuracy of cut, and may break.
7. When the cut is complete, move the trailing edge of the work piece beyond the blade guard foot.
Turn the switch OFF.
OPERATION
FIGURE 17
FIGURE 16
Summary of Contents for 3920
Page 8: ...8 KNOW YOUR SCROLL SAW ...
Page 20: ...20 EXPLODED VIEW PARTS LIST ...