Maintenance - EINHELL BH-G 726 Operating Instructions Manual

6.4 Fitting the additional handle (Figure 3)
For safety reasons you should always use the hammer
drill with the additional handle (4).
Slacken the clamping screw (11).
Slide the additional handle (4) over the chuck and
turn to the desired position.
Re-tighten the clamping screw (11) to fix the addi-
tional handle (10) in this position.
6.5 Setting the drilling depth stop (Figure 3/4)
Insert the drill bit and lock in place.
Slacken the clamping screw (11).
Insert the drilling depth stop (2) in the handle and
slide it forward until it extends the same distance
as the drill bit. This is best done by holding the tip
of the bit against the wall.
Note the mm reading on the scale of the drilling
depth stop (2) and deduct the desired drilling
depth from this value.
Set the calculated value on the drilling depth stop
(2) and tighten the clamping screw (11)
7. Starting up
7.1 Selecting the speed (Figure 5)
Always follow the speed recommendations issued by the
manufacturer of the accessories you are using. This will
minimize the strain on materials.
Turn the wheel selector (6) to set the hammer drill
to the required speed. Turn the wheel in PLUS (+)
direction to increase the speed. Turn the wheel in
MINUS (-) direction to reduce the speed.
Infinite variation of the speed up to the speed pre-
set with the selector wheel (6) is possible by apply-
ing more or less pressure to the On/Off switch (7).
With the On/Off switched (7) locked for continuous
operation the machine will run at the preset speed.
7.2 On/Off switch
Instant response operation:
Switching on: Press On/Off switch (7)
Switching off: Release On/Off switch (7)
Continuous operation:
Switching on: Press On/Off switch (7), keep pressed and
lock with the locking button (8)
Switching off: Press On/Off switch (7) and release
7.3 Clockwise/anticlockwise selector switch
(Figure 5)
For hammer drilling, chiseling, drilling and driving
in screws: Set the direction switch (5) to position
„R" for clockwise rotation.
For removing screws: Set the direction switch (5)
to position „L" for anticlockwise rotation.
Actuate the direction switch (5) only when the
machine is at a standstill.
7.4 Drill/hammer selector switch (Figure 6/7)
For drilling with hammer action in concrete or
masonry, set the selector switch (3) to position
(Abb. 7) and the selector switch (4) to position
(Figure 9).
Set the machine for clockwise rotation and start at
a low speed. Thanks to the electropneumatic ham-
mer mechanism used in this machine, drilling per-
formance is not dependent on the pressure you
apply (unlike conventional hammer drills). Applying
more pressure does not increase the performance.
For drilling in wood and metal or for driving and
removing screws, set the selector switch (3) to
position (Figure 8) and the selector switch (4) in
position (Figure 9)..
If you want to use conventional wood or metal drill
bits or screwdriver bits, insert the scroll chuck (9)
(see section 6.2). Set the machine for clockwise
rotation (or anticlockwise rotation for removing scr-
ews). Set the required speed with the wheel selec-
tor (6) and press the On/Off switch to start the
machine.
7.5. Chiseling (Figure 7/10)
For chiseling in concrete or masonry, set the sel-
ector switch (3) to position
selector switch (4) to position

8. Maintenance

Keep the air vents in the machine clean and un-
blocked at all times.
Remove dust and dirt from the machine at regular
intervals. This is best done by blowing with com-
pressed air or by wiping with a rag.
Do not use aggressive agents to clean plastic
parts.
If sparking is excessive, check the carbon brushes.
GB
(Figure 7) and the
(Figure 10).
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