7
Fig. 14
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. Inspecting the carbon brushes (Fig. 15)
The motor employs carbon brushes which are
consumable parts. Since en 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 they become
worn to or near the “wear limit”. In addition, always
keep carbon brushes clean and ensure that they
slide freely within the brush holders.
Fig. 15
CAUTION
●
When replacing the new carbon brushes, always
use genuine Hitachi carbon brushes with the number
(43) specified in Fig. 15.
4. Replacing carbon brushes:
Disassemble the brush caps with a slotted-head
screwdriver. The carbon brushes can then be easily
removed.
5. 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.
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) Placing a square against the base of the tool,
determine the angle desired and lightly tighten the
M4 screw. (See Fig. 16).
(2) Turn the angle adjustment screw until the end of
the screw touches the bevel plate. (See Fig. 4)
(3) After all adjustments have been made, firmly tighten
the M4 screw.
Fig. 16
NOTE
Due to HITACHI’s continuing program of research and
development, the specifications herein are subject to
change without prior notice.
Dust box
Dust cover
Hose fitting opening
Rubber
adapter
Rubber cap
M4 screw
17mm
6mm
43
Wear limit
No. of carbon brush
Slotted set
screw
Square
Base
M4 screw
