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G8994 Variable Speed Jig Saw
-7-
BLADE SPEED & CHIP BLOWER
Controlling Blade Speed
Blade speed or stroke rate is controlled by
a trigger style switch under the handle.
Speed increases as the trigger is pulled.
There is also a recessed circular switch in
the trigger which controls the maximum
stroke rate. See Figure 7. The switch is
marked with ranges from 1 to 6 where 1 is
the lowest stroke rate and 6 is the highest.
The adjustment is infinitely variable
between settings.
The proper speed depends upon the type
of material and the blade. Experiment with
a scrap piece of material when first making
a cut to see how the cutting action and
smoothness is. Adjust blade speed and
the rate of feeding the blade into the work
until the action is smooth and the motor
does not slow down excessively.
Fig 7. Blade speed control switch.
Setting Chip Blower
The toggle switch next to the orbital move-
ment selector controls the chip blowing
device. See Figure 8. When set as shown
in the photograph the amount of air is at its
highest level. This is suitable for cutting in
wood when it is desirable to blow the saw-
dust out of the way to see the cut line.
There are two additional settings which
progressively reduce the amount of air
delivered. The lowest setting may be used
for cutting in metal where cutting oil is
being used and it is not desirable to have
air move the oil away from the cutting sur-
face.
Fig 8. Chip blower switch.