Hitachi P 20SF User Manual

English
24
MAINTENANCE AND INSPECTION
1. Inspecting the blades
Continued use of dull or damaged blades will result in reduced cutting effi ciency and may cause
overloading of the motor. Sharpen or replace the blades as often as necessary.
2. Handling
CAUTION
The front base, rear base, and cutting depth control knob are precisely machined
to obtain specifi cally high precision. If these parts are roughly handled or
subjected to heavy mechanical impact, it may cause deteriorated precision and
reduced cutting performance. These parts must be handled with particular care.
3. 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.
4. Inspecting the carbon brushes (Fig. 30)
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 fi gure when it
becomes worn to or near the “wear limit”. In addition,
always keep carbon brushes clean and ensure that
they slide freely within the brush holders.
5. Replacing carbon brushes
After removing the chip cover, use a slotted screwdriver to disassemble the brush caps.
The carbon brushes can then be easily removed with the spring.
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. Replacing supply cord
If the replacement of the supply cord is necessary, it has to be done by Hitachi Authorized
Service Center to avoid a safety hazard.
If the supply cord of this power tool is damaged, it must be replaced by a specially prepared
cord available through the service organization.
8. Service parts list
CAUTION
Repair, modifi cation 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.
12 mm
5 mm
21
Wear limit
No. of carbon
brush
Fig. 30
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Hitachi P 20SF Specifications

General

Input power	620 W
Power source	AC
Idle speed	17000 RPM
Planning width (max)	82 mm
Chip thickness (max)	2.6 mm
Soft grip	Yes
Product color	Green

Weight and Dimensions

Width	296 mm
Weight	2500 g