Mounting And Dismounting The Saw Blade - Hitachi C 18DBL Handling Instructions Manual

If the base is slanted (45 degrees), use the small
front scale as the guide (Fig. 15, Fig. 24).
Front scale when not inclined
Front scale at
45˚ incline
(2) Ensure that the switch is turned to the ON position
before the saw blade comes in contact with the
lumber. The switch is turned ON when the trigger
is squeezed; and OFF when the trigger is released.
Moving the saw straight at a constant speed will
produce optimum cutting.
CAUTION
Before starting to saw, ensure that the saw blade
has reached full speed revolution.
Should the saw blade be stopped or made an
abnormal noise during operation, turn off the switch
immediately.
When finished with a job, pull out the battery from
the main body.
Twisting and forcibly pressing the saw during cutting
can result in unreasonable pressure on the motor,
so try to go straight quietly.
In the situation where the circular saw is continuously
operated while replacing the battery with stocked
spare batteries one after another, the motor tends
to overheat. Therefore, whenever the housing
becomes hot, give the saw a break for a while.
Avoid cutting operation in a state where the base
bottom is afloat from the material being cut.
Otherwise, the motor can get locked.
11
Premarked line
Fig. 23
Premarked line
Fig. 24
MOUNTING AND DISMOUNTING THE SAW
BLADE
CAUTION
To avoid serious accident, ensure the switch is in
the OFF position, and pull out the battery.
1. Dismounting the saw blade
(1) Set the cutting volume at maximum, and place the
Circular Saw as shown in Fig. 25.
Hex. bar wrench
Hex. bolt
Washer (B)
Lock lever
(2) Depress the lock lever, lock the spindle, and remove
the Hex. bolt and washer (B) with the hex. bar
wrench.
(3) While holding the lower guard lever to keep the
lower guard fully retracted into the saw cover,
remove the saw blade (Fig. 26).
Lower guard lever
Saw cover
Saw blade
2. Mounting the Saw Blade
CAUTION
If the hex. bolt is worked using other tools than
the provided hex. bar wrench, excessive tightening
and insufficient tightening may take place resulting
in injury.
(1) Thoroughly remove any sawdust which has
accumulated on the spindle, bolt and washers.
(2) As shown in Fig. 27, the side of Washer (A) with
a projected center the same diameter as the inner
diameter of the saw blade and the concave side
of Washer (B) must be fitted to the saw blade sides.
(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 hex. bolt retaining the
saw blade as much as possible. Then depress the
lock lever, lock the spindle, and thoroughly tighten
the hex. bolt.
CAUTION
After having attached the saw blade, reconfirm that
the lock lever is firmly secured in the prescribed
position.
Fig. 25
Fig. 26