Mounting And Dismounting The Saw Blade; Cutting Procedures - Hitachi C 7YA Handling Instructions Manual

Wing Bolt (B), Lock Spring

CUTTING PROCEDURES

1. Place the saw body (base) on the work piece, and
as in Fig. 6 align the intended line of cut with the
saw blade, using the notch at the front of the base.
This relationship of base to work pieces should
remain unchanged regardless of the inclination of
the base.
When Inclined 45°
2. The switch should be turned to the ON position
before the saw blade comes into contact with the
work piece. The switch is turned ON when the
trigger is pulled by one's finger, and is turned OFF
when the trigger is released.
3. Moving the saw straight at a constant speed will
produce optimum cutting.
CAUTION:
Keep hands away from cutting edges while the
circular saw is being operated.
Should the saw blade be stopped or make an
abnormol noise during operation, turn off the
switch immediately.
Don't remove circular saw from work piece during
a cut while the saw blade is moving.
Wear protective glasses and a dustproof mask.
Avoid cutting any material like metal, etc., that
give off sparks.
Always take care in preventing the power cord
from coming near the revolving saw blade.
Mount either of the dust bag, or dust guide
before use.
Before starting to saw, ensure that the saw blade
has reached full speed revolution.
6
Base
Guide
(Rip Fence)
Fig. 5
When not
Inclined
Fig. 6
MOUNTING AND DISMOUNTING THE SAW
BLADE
CAUTION:
To avoid serious accident ensure the switch is
in the OFF position, and disconnect the plug from
the receptacle.
1. Dismounting the saw blade (Fig. 7)
To replace the saw blade, push the lock lever, then
loosen the hexagonal bolt with the wrench.
The blade comes off easily.
Tighten
Loosen
Wrench
2. Mounting the saw blade (Fig. 8)
(1) Thoroughly remove any sawdust which has
accumulated on the spindle, bolt and washers.
(2) For mounting saw blade, the concave sides of both
washers (A) and (B) must be fitted to the saw blade
sides. Mount the saw blade on the spindle, and
finally affix washer (B).
(3) To assure proper rotation direction of the saw blade,
the arrow direction on the saw blade must coincide
with the arrow direction on the saw cover.
(4) Using the fingers, tighten the hexagonal bolt
retaining the saw blade as much as possible. Then
depress the lock lever, lock the spindle, and
thoroughly tighten the bolt.
(5) Confirm that the lock lever is in the original position.
Washer (B)
Hexagonal
Flange Bolt
Lock Lever
Fig. 7
Saw Blade
Washer (A)
Fig. 8