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MAINTENANCE AND INSPECTION
WARNING:
1. Inspecting the blade
Continued use of a dull or damaged blade will result in reduced cutting efficiency and may
cause overloading of the motor. Replace the blade with a new one as soon as excessive
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 loosened, retighten them immediately.
WARNING:
3. Maintenance of the motor
The motor unit winding is the very "heart" of the power tool. Exercise due care to ensure
the winding does noto become damaged and/or wet with oil or water.
4. Inspecting the carbon brushes (Fig. 28)
The Motor employs carbon brushes which
are consumable parts. When they become
worn to or near the "wear limit", it could
result in motor trouble. When an auto-stop
carbon brush is equipped, the motor will
stop automatically. At that time, replace
both carbon brushes with new ones which
have the same carbon brush Numbers shown
in the figure. In addition, always keep carbon
brushes clean and ensure that they slide
freely within the brush holders.
NOTE: Use HITACHI carbon brush No. 43 indicated in Fig. 28.
5. Replacing carbon brushes
Disassemble the brush caps with a slotted-head screwdriver. The carbon brushes can
then be easily removed.
6. 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.
7. Service parts list
CAUTION: Repair, modification and inspection of Hitachi Power Tools must be carried
out by an Hitachi Authorized Service Center.
This Parts List will be helpful if presented with the tool to the Hitachi
18
Be sure to switch power OFF and disconnect the plug from the receptacle
during maintenance and inspection.
Using this reciprocating saw with loosen screws is extremely dangerous.
No. of carbon
Wear limit
brush
43
0.24" (6 mm)
0.67" (17 mm)
Fig. 28
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