Operation - Makita HR2450 Instruction Manual

1
1. Depth gauge
1. Dust cup

OPERATION

Depress the lock button and rotate the action mode changing knob to the
003577
symbol. Then make sure that the bit is securely held in place by turning it
slightly.
Depth gauge
001299
The depth gauge is convenient for drilling holes of uniform depth. Loosen the
side grip and insert the depth gauge into the hole in the side grip. Adjust the
depth gauge to the desired depth and tighten the side grip.
NOTE:
• The depth gauge cannot be used at the position where the depth gauge
strikes against the gear housing.
Dust cup
001300
Use the dust cup to prevent dust from falling over the tool and on yourself
when performing overhead drilling operations. Attach the dust cup to the bit as
shown in the figure. The size of bits which the dust cup can be attached to is
1
as follows.
Hammer drilling operation
003579
Set the action mode changing knob to the
Position the 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 posi-
tion 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 bit partially from the
hole. By repeating this several times, the hole will be cleaned out and normal
drilling may be resumed.
CAUTION:
• There is a tremendous and sudden twisting force exerted on the tool/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 operations. Failure to do
so may result in the loss of control of the tool and potentially severe
injury.
Dust cup 5
Dust cup 9
Bit diameter
6 mm - 14.5 mm
12 mm - 16 mm
symbol.
C00022
9