Makita DHR400 Manuel D'instructions page 14

Grease
Coat the shank end of the drill bit beforehand with a
small amount of grease (about 0.5 - 1 g).
This chuck lubrication assures smooth action and lon-
ger service life.
Installing or removing drill bit
Clean the shank end of the drill bit and apply grease
before installing the drill bit.
► Fig.11: 1. Shank end 2. Grease
Insert the drill bit into the tool. Turn the drill bit and push
it in until it engages.
After installing the drill bit, always make sure that the
drill bit is securely held in place by trying to pull it out.
► Fig.12: 1. Drill bit
To remove the drill bit, pull the chuck cover down all the
way and pull the drill bit out.
► Fig.13: 1. Drill bit 2. Chuck cover
Chisel angle (when chipping,
scaling or demolishing)
The chisel can be secured at the desired angle. To
change the chisel angle, rotate the action mode chang-
ing knob to the O symbol. Turn the chisel to the desired
angle.
► Fig.14: 1. Action mode changing knob 2. Pointer
Rotate the action mode changing knob to the
bol. Then make sure that the chisel is securely held in
place by turning it slightly.
Depth gauge
The depth gauge is convenient for drilling holes of
uniform depth.
Press and hold the lock button, and then insert the
depth gauge into the hex hole.
► Fig.15: 1. Depth gauge 2. Lock button
Make sure that the toothed side of the depth gauge
faces the marking.
► Fig.16: 1. Marking 2. Toothed side
Adjust the depth gauge by moving it back and forth
while pressing the lock button. After the adjustment,
release the lock button to lock the depth gauge.
NOTE: Make sure that the depth gauge does not
touch the main body of the tool when attaching it.
Dust extractor attachment
Optional accessory
Installing the dust extractor attachment
1. Loosen the side grip on the tool.
2. Install the dust cover so that the claws of the dust
cover fit in the grooves between the tool and the side
grip.
► Fig.17: 1. Dust cover 2. Claw 3. Groove
3. Tighten the side grip securely.
4. Set the suitable bellows or dust cover extension
for your work. When you use bellows, attach the joint to
its top. When you stack two bellows, connect them with
the joint.
► Fig.18: 1. Dust cover extension 2. Dust cover
Connecting the tool to the vacuum
cleaner
1. Attach the holder joint to the tool, and then attach
the hose holder to the holder joint.
► Fig.19: 1. Holder joint 2. Hose holder
2. Fix the hose to the hose holder.
► Fig.20: 1. Hose holder
NOTE: Use joint 25 to connect the hose and the dust
cover if necessary.
Using depth gauge for drilling
operation
When you stack two bellows, attach the depth gauge
extension to the depth gauge.
► Fig.21: 1. Depth gauge extension
Dust extractor attachment (for
hammering only)
Optional accessory
sym-
1. Install the hose holder.
When the side handle is installed to tool, loosen the
clamp nut, and then remove the hex bolt. Install the
hose holder with the hex bolt and the clamp nut by
tightening the clamp nut firmly.
► Fig.22: 1. Bolt 2. Hose holder 3. Clamp nut
When the side grip is installed to the tool, loosen the
side grip, mount the hose holder to the shaft, and then
tighten the side grip firmly.
► Fig.23: 1. Hose holder 2. Shaft 3. Side grip
2.
Attach the holder joint to the tool, and then attach
the hose holder to the holder joint.
► Fig.24: 1. Holder joint 2. Hose holder
3. Attach the dust cover and the hose to the tool, and
then fix the hose to the hose holders.
► Fig.25: 1. Dust cover 2. Hose 3. Hose holder
4. Connect the hose to the hose of the vacuum
cleaner with the hose joint.
NOTE: If the hose is not included, attach the dust
cover to the cleaner's joint or attach it to Makita's
hose ø28.
5. Adjust the distance between the dust cover and
the tip of the chisel or bull point. The recommended
distance is 30 mm to 100 mm.
► Fig.26: (1) 30 mm to 100 mm
14 ENGLISH
3. Joint 4. Bellows