3.Extension cord
When the work area is removed from the power source, use an extension cord of sufficient thickness and rated capacity. The extension cord should be kept as short as practicable.
4.Mounting the drill bit (Fig.1)
Please operate the model exclusively intended for the SDS bit as described below.
Fully shift the slide grip of the chuck section in the direction of arrow and insert the drill bit while rotating it slowly. Match the drill bit to the square hole in the slide grip and firmly insert it. The drill bit is firmly locked in place when the slide grip is returned to its original position. Remove the drill bit in the reverse order of installation. Do not fail to use HITACHI GENUINE DRILL BIT. Although the chuck section is of
5.Mounting the dust cup (Fig.2)
When it is necessary to drill a hole with the drill bit facing upward, such as drilling holes in a ceiling, use of a dust cup will minimize falling particles to attain easy drilling work. Mount the dust cup to the drill bit as shown in Fig.2.
When using a large drill bit, enlarge the hole in the center when mounting it on the drill bit.
HOW TO USE
Please operate the model exclusively intended for the SDS bit as described below.
1.Switch operation
The rotational speed of the drill bit can be controlled by varying the amount that the trigger switch is pulled. Speed is low when the trigger switch is pulled slightly and increaes when the switch is pulled more.
2.Rotation + striking
This hammer drill can be set to rotation and striking mode by rotating the selector lever fully counter-
clockwise to | mark. (Fig.3) |
(1)Mount the drill bit
(2)Pull the trigger switch after placing the drill bit tip in the drilling position. (Fig.4)
(3)Pushing the hammer drill forcibly is not necessary. It is sufficient to push slightly so that drill dust comes out gradually.
CAUTION
When the drill bit touches construction iron bar, the bit will stop immediately and the hammer drill react
to revolving. Therefore, grip the side handle and handle tightly.
3.Rotation only
The hammer drill can be set to rotation only mode by rotating the selector lever fully clockwise to 
mark. (Fig.5)
(1)Attach the drill chuck and chuck adapter (optional accessories). The hammer drill can be used for drilling of steel and wood materials with these accessories.
In order to attach the accessories, fully withdraw the slide grip of chuck section in the direction of the arrow in Fig.6.
English
Slightly insert the chuck adapter into the square hole of the slide grip by rotating; fully insert the chuck adapter after it is matched with the square hole. Return the slide grip to its original position so that the chuck adapter is locked tight.
For removal of the accessories, reverse the above procedures.
(2)Application of excessive force will not expedite the work, but will only deteriorate the tip edge of the drill bit resulting in reduced service life of the hammer drill.
(3)When the hole is nearly completed, the drill bit sometimes breaks. When the hole is nearly completed, release the pushing force.
CAUTION
After drilling is finished, always disconnect the plug
from the receptacle.
4.How to use the drill bit (taper shank) and the taper shank adapter
(1)Mount the taper shank adapter to the hammer drill.
(Fig.7)
(2)Mount the dill bit (taper shank) to the taper shank adapter. (Fig.7)
(3)Turn the switch ON, and drill a hole of prescribed depth.
(4)To remove the drill bit (taper shank), insert the cotter into the slot of the taper shank adapter that is supported by the rest and strike the head of the
cotter with a hammer (Fig.8).
5.How to use the stopper Fixing the stopper (Fig.9)
(1)Loosen the side handle and insert the linear part of the stopper into the fitting hole of the handle holder from the chuck section side.
(2)Move the stopper to its prescribed position while the side handle is left loosened, then rotate the side handle clockwise to fix the stopper.
LUBRICATION
Low viscosity grease should be applied to this hammer drill so that it can be used for a long period without replacing the grease. Please contact the nearst service agent for grease replacement if grease leaks from loosened screws.
Continued use of the hammer drill despite a grease shortage will cause reduction of the service life.
CAUTION
The specified grease should be used in this machine. Therefore, the normal performance of the machine may be negatively affected by use of another grease. Please be sure to ask our service agent for replacement of the grease.
MAINTENANCE AND INSPECTION
CAUTION
Be sure to run power OFF and disconnect the plug during maintenance and inspection.
1.Inspecting the drill bits
Since use of a dull drill bit will cause motor malfunctioning and reduced efficiency, replace the drill bit with a new one or resharpen without delay when abrasion is noted.
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