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(4) Grinding Stone
When a water grinding stone is available, use it after
dipping it sufficiently in water since such a grinding
stone may be worn during grinding procedures,
flatten the upper surface of the grinding stone as
frequently as possible.
WARNING:
Be sure to switch power OFF and disconnect the
plug from the receptacle during maintenance and
inspection.
1. Inspecting the cutter blades
Continued use of dull or damaged cutter blades will
result in reduced cutting efficiency and may cause
overloading of the motor. Sharpen or replace the
cutter blades as often as necessary.
2. Handling
CAUTION:
The front base, rear base, and cutting depth
control knob are precisely machined to obtain
specifically high precision. If these parts are
roughly handled or subjected to heavy mechanical
impact, it may cause deteriorated precision and
meduced cutting performance. These parts must
be handled with particular care.
3. Inspecting the screws
Regularly inspect all screws and ensure that they
are fully tightened. Should any of the screws be
loosened, retighten them immediately.
WARNING:
Using this planer with loosened screws is
extremely dangerous.
4. Inspecting the carbon brushes (Fig. 20)
The motor employs carbon brushes which are
consumable parts. Replace the carbon brush with a
new one when it becomes worn to its wear limit.
Always keep carbon brushes clean and ensure that
they slide freely within the brush holders.
Wear limit
0.47" (12mm)
12
01Eng_p20SF_US
MAINTENANCE INSPECTION
No. of carbon brush
21
0.20" (5mm)
Fig. 20
12
CAUTION:
Using this planer with a carbon brush which is
worn in excess of the wear limit will damage the
motor.
NOTE:
Use HITACHI carbon brush No. 21 indicated in Fig.
20.
5. Replacing carbon brushes
Disassemble the brush caps (Fig. 1) with a slotted
screwdriver. The carbon brushes can then be easily
removed.
6. Replacing supply cord
If the replacement of the supply cord is necessary,
this has to be done by the manufacturer of this agent
in order to avoid a safety hazard.
7. Service and repairs
All quality power tools will eventually require
servicing or replacement of parts because of wear
from normal use. To assure that only authorized
replacement parts will be used, all service and
repairs must be performed by a HITACHI
AUTHORIZED SERVICE CENTER, ONLY.
8. 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.
3/22/12, 9:49
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