Maintenance Inspection - Hitachi P20STQS Instruction Manual And Safety Instructions

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. 19)
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
21
0.47" (12 mm)

MAINTENANCE INSPECTION

No. of carbon brush
0.20" (5 mm)
Fig. 19
CAUTION:
Using this planer with a carbon brush which is
worn in excess of the wear limit will damage the
motor.
NOTE:
Use metabo HPT carbon brush No. 21 indicated in
Fig. 19.
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 metabo HPT Authorized
Service Center in order to avoid a safety hazard.
7. Replacing drive belt.
If the replacement of the drive belt is necessary, this
has to be done by metabo HPT Authorized Service
Center in order to avoid a safety hazard.
8. 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 metabo HPT AUTHORIZED
SERVICE CENTER, ONLY.
CAUTION:
In the operation and maintenance of power tools,
the safety regulations and standards prescribed
in each country must be observed.
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