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High/Low Speed Operation (Fig. 3)
The two speed gear drive in the dual range hammerdrill permits
effective operation over an extended range of applications with
greater selection of accessories.
For LOW SPEED operation, the shift knob located on the underside
of the hammerdrill should be rotated so the low speed setting is
toward the front of the tool.
For HIGH SPEED operation, the shift knob should be rotated so the
high speed setting is toward the front of the tool.
The gear train has been designed for shifting only when the unit is off.
It may be necessary however, to rotate the chuck slightly by hand to
align the gears while turning the shift knob.
NOTICE: DO NOT ATTEMPT TO CHANGE SPEEDS by turning the
shift knob when the tool is running. Doing so will damage the gear
train.
FIG. 3
SHIFT KNOB
FRONT OF TOOL
LOW SPEED
SETTING
HIGH SPEED
SETTING
Hammer/Drill Selector (Fig. 4)
To switch the tool from the drilling mode to the hammering mode
(or vice-versa) rotate the selector to the applicable symbol as shown
in Figure 4.
REVERSING
LEVER
TRIGGER
SWITCH
LOCK ON
BUTTON
FIG. 2
VARIABLE SPEED
The variable speed trigger switch permits speed control. The
farther the trigger switch is depressed, the higher the speed of the
hammerdrill.
NOTE: Use lower speeds for starting holes without a centerpunch,
drilling in metal, plastics or ceramics, or driving screws. Higher speeds
are better for drilling in wood and composition board and for using
abrasive and polishing accessories.
REVERSING LEVER
The reversing lever is used to reverse the hammerdrill for backing
out screws or jammed bits. It is located above the trigger, shown in
Figure2. To reverse the hammerdrill, turn it off and push the reversing
lever to the left (when viewed from the chuck end).
To position the lever for forward operation, turn the hammerdrill off
and push the lever to the right (when viewed from the chuck end).