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15
HOW TO USE
1. Switch operation
⅜
When the switch trigger is depressed, the tool
rotates. When the switch trigger is released, the
tool stops.
⅜
The rotational speed of the rotary hammer can be
controlled by varying the amount that the switch
trigger is pulled. Speed is low when the switch
trigger is pulled slightly and increases as the switch
trigger is pulled more.
⅜
When releasing the switch trigger, the brake will
be applied for immediate stopping.
2. Rotation + Striking
Align the “ ” mark with the “ ” mark by
rotating the change lever to set the “Rotation +
Striking” mode. (Fig. 12)
(1) Mount the drill bit.
(2) Pull the trigger switch after applying the drill bit
tip to the drilling position. (Fig. 13)
(3) Pushing the rotary hammer forcibly is not
necessary at all. Pushing slightly so that drill dust
comes out gradually is just sufficient.
CAUTION:
●
When the drill bit touches an iron reinforcing rod,
the bit will stop immediately and the rotary
hammer will react to revolve. Therefore please grip
the side handle and handle tightly as shown in
Fig. 13.
Fig. 13
3. Rotation only
Align the “ ” mark with the “ ” mark by rotating
the change lever to set the “Rotation only” mode.
(Fig. 12)
To drill a wood or metal material using the
separately sold drill chuck and chuck adaptor,
proceed as follows. Installing drill chuck and chuck
adaptor (Fig. 14):
(1) Attach the drill chuck to the chuck adaptor.
(2) The part of the SDS-plus shank is the same as the
drill bit. Therefore, refer to the item of “Mounting
the drill bit” for attaching it.
CAUTION:
●
Application of force more than necessary will not
only reducing drilling efficiency at all, but will
deteriorate the tip edge of the drill bit and reduce
the service life of the rotary hammer in addition.
●
Drill bit may snap off while withdrawing the rotary
hammer from the drilled hole. For withdrawing,
it is important to use a pushing motion.
●
Do not attempt to drill anchor holes or holes in
concrete with the main unit in the rotation only
mode.
●
Do not attempt to use the rotary hammer in the
rotation and striking mode with the drill chuck and
chuck adaptor attached. This would seriously
shorten the service life of every components of
the machine.
4. When driving machine screws (Fig. 15)
First, insert the bit into the socket in the end of
chuck adaptor (D).
Next, mount chuck adaptor (D) on the main unit
using procedures described in 3 (1), (2), (3), put
the tip of the bit in the slots in the head of the screw,
grasp the main unit and tighten the screw.
“ ”
mark
“
”
mark
“
”
mark
Change
lever
Fig. 12
“
”
mark
Part of
SDS-plus
shank
Front
cap
Grip
Fig. 14
Drill chuck
Chuck adaptor
01Eng_DH25DAL_US 9/14/07, 20:3915