Hitachi C 9SA2 - Manual (Page 9)

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3. Inspecting the carbon brushes (Fig. 10)
The motor employs carbon brushes which are
consumable parts. Since an excessively worn carbon
brush can result in motor trouble, replace the carbon
brushes with new ones 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 ensue that they
slide freely within the brush holders.
CAUTION
⅜ When replacing the new carbon brushes, always
use genuine Hitachi carbon brushes with the number
specified in the drawing.
⅜ For model C9BA2 , the brake may not work if other
than the specified carbon brushes are used.
When the brake becomes ineffective, replace the
carbon brushes with new ones.
4. Replacing carbon brushes
Disassemble the brush caps with a slotted-head
screwdriver. The carbon brushes can then be easily
removed.
5. Replacing supply cord
If the replacement of the supply cord is necessary,
this has to be done by Hitachi Authorized Service
Center in order to avoid safety hazard.
6. 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.
7. 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. 11) and loosen the wing-
nut and wing-bolt (Fig. 4 (A), Fig. 4 (B)).
(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.
8. Service parts list
CAUTION
Repair, modification and inspection of Hitachi Power
Tools must be carried out by an 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.