Maintenance And Inspection - Hitachi M 12SC Handling Instructions Manual

4 As shown in Fig. 10, securely attach the bottom of the
base to processed surface of the materials. Feed the
router while keeping the guide plane on the surface
of the materials.
5. Cutting
WARNING:
Wear eye protection when operating this tool.
Keep your hands, face and other body parts away from
the bits and any other rotating parts, while operating
the tool.
(1) The bit must be kept clear of the materials which are
to be cut, when the power is being turned on. (Fig.
11)
Separate
(2) Then turn the tool on and wait until the bit attains full
speed.
(3) The bit rotates clockwise (arrow direction indicated
on the base). To obtain maximum conformance with
the feed directions shown in Fig. 12.
Router feed
Rotation of bit
NOTE:
Moving the tool forward fast may cause a poor quality
of cut, or damage to the bit or motor. Moving the tool
forward too slowly may burn and mar the cut.
The proper feed rate will depend on the bit size, the
kind of workpiece and depth of cut. Before beginning
the cut on the actual workpiece, it is advisable to make
a sample cut on a piece of scrap lumber. This will
show exactly how the cut will look as well as enable
you to check dimensions.
5
Fig. 10
Fig. 11
Router feed
workpiece
Fig. 12
Abnormalities and overloads will trigger the overload
protector, and stop operation. Remove the load
immediately, and turn the power off, then on. The
rotation speed should return to normal.
Do not use a power generator as the power source. It
may cause the rotation speed to fluctuate.
When using the straight guide, be sure to install it on
the right side in the feed direction. This will help to
keep it flush with the side of the workpiece.

MAINTENANCE AND INSPECTION

1. 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.
2. 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.
3. 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
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.
17 mm
4. Replacing carbon brushes:
Disassemble the brush caps with a slotted-head
screwdriver. The carbon brushes can then be easily
removed.
5. 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.
Wear limit
43
6 mm
No. of carbon brush
Fig. 13