Makita DHR400 Manuel D'instruction page 13

3. Attach the dust cover and the hose to the tool, and
then fix the hose to the hose holders.
1 2
► 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 (1-3/16") to 100 mm (3-15/16").
(1)
► ( 1) 30 mm (1-3/16") to 100 mm (3-15/16")
3
3
OPERATION
CAUTION:
Always use the side grip (auxiliary
handle) and firmly hold the tool by both side grip
and switch handle during operations.
CAUTION:
Always make sure that the work-
piece is secured before operation.
CAUTION:
Do not pull the tool out forcibly
even the bit gets stuck. Loss of control may
cause injury.
NOTE: If the battery cartridge is in low temperature,
the tool's capability may not be fully obtained. In this
case, warm up the battery cartridge by using the
tool with no load for a while to fully obtain the tool's
capability.
Hammer drilling operation
CAUTION:
There is tremendous and sudden
twisting force exerted on the tool/drill bit at the time of
hole break-through, when the hole becomes clogged
with chips and particles, or when striking reinforcing
rods embedded in the concrete. Always use the side
grip (auxiliary handle) and firmly hold the tool by
both side grip and switch handle during opera-
tions. Failure to do so may result in the loss of control
of the tool and potentially severe injury.
Set the action mode changing knob to the
Position the drill bit at the desired location for the hole,
then pull the switch trigger. Do not force the tool. Light
pressure gives best results. Keep the tool in position
and prevent 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 drill bit partially from the hole.
By repeating this several times, the hole will be cleaned
out and normal drilling may be resumed.
NOTE: Eccentricity in the drill bit rotation may occur
while operating the tool with no load. The tool auto-
matically centers itself during operation. This does not
affect the drilling precision.
13 ENGLISH
symbol.