Flex FX1551A Operator's Manual page 15

MODE SELECTOR (FIG. 13)
The operation of the gearbox for each
application is set with the mode selector. To
change among functions, depress the release
button and rotate the selector to the desired
operating mode.
NOTICE: Do not operate the mode selector
until the tool comes to a complete stop.
Changing mode during rotation of the chuck can
cause damage to the tool.
Rotary Drilling Mode
Hammer Drilling Mode
Working Angle
Adjustment for Chisel
Bits
Hammering Mode
SETTING THE CHISEL POSITION (FIG. 14)
The chisel can be turned to a position that is
ideal for the work to be performed.
a. Move the mode selector to the symbol
b. Turn the chisel until it is at the required angle.
c. Move the mode selector to the symbol .
Make sure that it audibly clicks into place.
Fig. 13
Release
Button
Fig. 14
b
.
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Mode Selector
a c