Operation; Maintenance - Makita HR4001C Betriebsanleitung

Bit angle (when chipping, scaling or demolishing)
The bit can be secured at 12 different angles. To change
the bit angle, depress the lock button and rotate the
change lever so that the pointer points to the
Turn the bit to the desired angle. (Fig. 16 & 17)
Depress the lock button and rotate the change lever so
that the pointer points to the
that the bit is securely held in place by turning it slightly.
(Fig. 18 & 19)
Depth gauge (Fig. 20)
The depth gauge is convenient for drilling holes of uni-
form depth. Loosen the clamp screw and adjust the
depth gauge to the desired depth. After adjusting, tighten
the clamp screw firmly.
NOTE:
• The depth gauge cannot be used at the position where
the depth gauge strikes against the gear housing/motor
housing.

OPERATION

Hammer drilling operation (Fig. 21)
Set the change lever to the
Position the bit at the desired location for the hole, then
pull the switch trigger. Do not force the tool. Light pres-
sure gives best results. Keep the tool in position and pre-
vent it from slipping away from the hole.
Do not apply more pressure when the hole becomes
clogged with chips or particles. Instead, run the tool at an
idle, then remove the bit partially from the hole. By
repeating this several times, the hole will be cleaned out
and normal drilling may be resumed.
CAUTION:
• When the bit begins to break through concrete or if the
bit strikes reinforcing rods embedded in concrete, the
tool may react dangerously. Maintain good balance and
safe footing while holding the tool firmly with both
hands to prevent dangerous reaction.
Blow-out bulb (optional accessory) (Fig. 22)
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
Chipping/Scaling/Demolition (Fig. 23)
Set the change lever to the
Hold the tool firmly with both hands. Turn the tool on and
apply slight pressure on the tool so that the tool will not
bounce around, uncontrolled. Pressing very hard on the
tool will not increase the efficiency.

MAINTENANCE

CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
10
symbol.
symbol. Then make sure
symbol.
symbol.
Lubrication
CAUTION:
• This servicing should be performed by Makita Autho-
rized or Factory Service Centers only.
This tool requires no hourly or daily lubrication because it
has a grease-packed lubrication system. Lubricate the
tool every time the carbon brushes are replaced.
Run the tool for several minutes to warm it up. Switch off
and unplug the tool.
Loosen the four screws and remove the handle. Note that
the top screws are different from other screws. (Fig. 24)
Disconnect the connector by pulling them. (Fig. 25)
Loosen the screws and remove the change lever.
Remove the crank cap cover. (Fig. 26)
Remove the control plate. (Except for model HR4011C.)
(Fig. 27)
Loosen the six screws with a screwdriver and remove the
crank cap. Rest the tool on the table with the bit end
pointing upwards. This will allow the old grease to collect
inside the crank housing. (Fig. 28)
Wipe out the old grease inside and replace with a fresh
grease (60 g). Use only Makita genuine hammer grease
(optional accessory). Filling with more than the specified
amount of grease (approx. 60 g) can cause faulty ham-
mering action or tool failure. Fill only with the specified
amount of grease.
Reinstall the crank cap and tighten with the screwdriver.
(Fig. 29)
Connect the connector and reinstall the handle. (Fig. 30)
CAUTION:
• Do not tighten the crank cap excessively. It is made of
resin and is subject to breakage.
• Be careful not to damage the connector or lead wires
especially when wiping out the old grease or installing
the handle.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per-
formed by Makita Authorized Service Centers, always
using Makita replacement parts.
ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita service center.
• SDS-MAX Carbide tipped bit
• SDS-MAX bull point
• SDS-MAX cold chisel
• SDS-MAX scaling chisel
• SDS-MAX tile chisel
• SDS-MAX clay spade
• Hammer grease
• Bit grease
• Side handle
• Side grip
• Depth gauge
• Blow-out bulb
• Safety goggle
• Carrying case