Hilti SFC 14-A Operating Instructions Manual page 19

6.2 Speed selection using the 2-speed gear switch
WARNING
Large and heavy insert tools must only be operated in first gear. There
is otherwise a risk that the tool will be damaged when it is switched off or,
under unfavorable conditions, the chuck might be detached.
NOTE
The mechanical 2-speed gear switch can be used to select the speed
range required. Speed with fully-charged battery: SFC 14­A: 1st gear:
0­500 /min., 2nd gear: 0­1700 /min. SFC 18­A: 1st gear: 0­600 /min., 2nd
gear: 0­1800 /min.
6.3 Switching on / off
Speed of rotation can be controlled smoothly up to maximum speed by
pressing the control switch slowly.
6.4 Fitting the drill bit
1. Check that the connection end of the drill bit is clean. Clean the
connection end if necessary.
2. Insert the drill bit in the keyless chuck and then turn the chuck firmly by
hand until several clicks are heard.
3. Check that the drill bit is held securely.
6.5 Removing the drill bit
1. Open the keyless chuck.
2. Pull the insert tool out of the chuck.
6.6 Drilling
CAUTION
Use clamps or a vice to secure the workpiece. The workpiece is thus
held more securely than by hand and both hands remain free to operate
the power tool.
1. Turn the torque and operating mode setting ring to the drilling symbol.
2. Move the forward / reverse switch to the "Forward" position.
6.7 Screwdriving
6.7.1 Fitting the bit holder / bit
1. Open the keyless chuck.
2. Insert the bit adapter in the keyless chuck and then turn the chuck firmly
by hand until tight.
Printed: 20.05.2015 | Doc-Nr: PUB / 5071590 / 000 / 02
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