Use Of Dust Guide; Maintenance And Inspection - Hitachi C 7YA Handling Instructions Manual

English

USE OF DUST GUIDE

CAUTION:
To avoid serious accidents, ensure the switch is
in the OFF position, and disconnect the plug from
the receptacle.
The dust guide is a component part that changes
the discharge direction of sawdust and is not a
tool to collect dust. Make certain that you wear
protective glasses and a dustproof mask during
the use of the dust guide.
The dust guide can change the direction of the
discharge direction. Never point it in the direction
of the worker.
1. Mounting the dust guide
(1) Insert the dust guide's thrusting mouth into the
adapting mouth of the body. (Fig. 11)
(2) Turn the dust guide and point it in the desired
direction to discharge sawdust. (Fig. 12)

MAINTENANCE AND INSPECTION

1. Inspecting the saw blade
Since use of a dull saw blade will degrade efficiency
and cause possible motor malfunction. Resharpen and
replace the saw blade as soon as abrasion is noted.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure
that they are properly tightened. Should any of the
screws be loose, retighten them immediately. Failure
to do so could result in serious hazard.
3. Maintenance of the motor
The motor unit winding is the very "heart" of the
power tool.
Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.
4. Inspecting the carbon brushes (Fig. 13)
The motor employs carbon brushes which are
consumable parts. Since an excessively worn carbon
brush can result in motor trouble, replace the carbon
brush with a new one having the same carbon brush
No. shown in the figure when it becomes worn to or
near the "wear limit". In addition, always keep carbon
brushes clean and ensure that they slide freely within
the brush holders.
5. Replacing carbon brushes
Disassemble the brush cap with a screwdriver. The
carbon brush can then be easily removed.
6. Adjusting the base and saw blade to maintain
perpendicularity
The angle between the base and the saw blade has
been adjusted to 90°, however should this
perpendicularity be lost for some reason, adjust in
the following manner:
(1) Turn the base face up (Fig. 14) and loosen the wing-
nut (Fig. 4).
(2) Apply a square to the base and the saw blade and,
turning the slotted set screw with a slotted-head
screwdriver, shift the position of the base to produce
the desired right angle.
7
7. Service parts list
CAUTION
Repair, modification and inspection of Hitachi Power
Tools must be carried out by a Hitachi Authorized
Service Center.
This Parts List will be helpful if presented with the
tool to the Hitachi Authorized Service Center when
requesting repair or other maintenance.
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
country must be observed.
MODIFICATIONS
Hitachi Power Tools are constantly being improved
and modified to incorporate the latest technological
advancements.
Accordingly, some parts may be changed without
prior notice.
NOTE
Due to HITACHI's continuing program of research and
development, the specifications herein are subject to
change without prior notice.