Maintenance And Inspection - Hitachi C 12LSH Handling Instructions Manual

The saw blade can easily be removed after lifting the lower guard.
CAUTION
Never attempt to install saw blades larger than 305 mm in diameter.
Always install saw blades that are 305 mm in diameter or less.

MAINTENANCE AND INSPECTION

WARNING
To avoid an accident or personal injury, always confi rm the trigger switch is turned
OFF and that the power plug has been disconnected from the receptacle before
performing any maintenance or inspection of this tool.
1. Inspecting the saw blade
Always replace the saw blade immediately upon the fi rst sign of deterioration or damage.
A damaged saw blade can cause personal injury and a worn saw blade can cause
ineff ective operation and possible overload to the motor.
CAUTION
Never use a dull saw blade. When a saw blade is dull, its resistance to the hand
pressure applied by the tool handle tends to increase, making it unsafe to operate
the power tool.
2 Inspecting the carbon brushes
For your continued safety and electrical shock protection, carbon brush inspection and
replacement on this tool should ONLY be performed by a Hitachi Authorized Service
Center.
3. About Handling the Motor (see Fig. 1 on page 56)
Winding of the motor is said to be the heart of this tool. Exercise utmost caution not to
damage the winding by exposing it to wash oil or water.
NOTE
Accumulation of dust and the like inside the motor can result in a malfunction.
After using the motor for 50 hours or so, carry out no-load running, and blow in the dry air
from a wind hole at the motor's rear. Such action is eff ective to discharge dust and the like.
4. Inspecting the screws
Regularly inspect each component of the power tool for looseness.
Re-tighten screws on any loose part.
WARNING
To prevent personal injury, never operate the power tool if any components are
loose.
5. Inspecting the lower guard for proper operation
Before each use of the tool, test the lower guard (see Fig. 6 on page 61) to assure that it is
in good condition and that it moves smoothly.
Never use the tool unless the lower guard operates properly and it is in good mechanical
condition.
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