Adjusting The Saw Prior To Use; How To Use - Hitachi C 18DMR Handling Instructions Manual

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ADJUSTING THE SAW PRIOR TO USE

CAUTION
Pull out battery before doing any adjusting.
1. Adjusting the cutting depth
As shown in Fig. 13, hold the handle with one hand
while loosening the wing nut with the other.
The cutting depth can be adjusted by moving the
base to the desired position. In such manner adjust
the cutting depth and then securely retighten the
wing nut.
2. Adjusting the angle of inclination
As shown in Fig. 14 by loosening the wing nut on
the incline gauge, the saw blade may be inclined
to a maximum angle of 50° in relation to the base.
After having completed the adjustment, reconfirm
that the wing bolt are firmly tightened.
NOTE
Values of the inclined gauge provided on the base
merely serve as a rough guideline. For cutting
operation at an inclined posture, use the circular
saw after adjusting the angle between the base and
the saw blade with a protractor, etc.
3. Regulating the guide (Fig. 16)
The cutting position can be regulated by moving
the guide to the left or right after loosening its knob
bolt. The guide may be mounted on either the right
or left side of the tool.

HOW TO USE

1. Operation of switch (Fig. 17)
(switch trigger and light switch)
(1) For safe operation of the machine, a "switch lock"
is provided on the side of a handle.
If the "switch trigger" is pulled in a state where
"switch lock" is pressed in the direction of the
arrow mark, the main switch can be turned ON.
And the "switch lock" is used as the "light switch".
If the "switch lock (light switch)" is pressed in a
state, the light is turned ON.
(2) After the switch is turned ON, even when you
release your hand from the switch lock, the body
continues running and the light continues being
turned ON as long as you keep on pulling the
switch trigger.
(3) If you release the switch trigger, you can turn OFF
the switch and the "switch lock" returns to the
original position automatically and the light turns
OFF too.
CAUTION
Do not fix and secure the switch lock. Besides, keep
your finger off the switch trigger when the circular
saw is being carried around. Otherwise, the main
body switch can be inadvertently turned ON,
resulting in unexpected accidents.
Keep the light ON during cutting operation only.
If it is lit ON in other cases, the main body switch
can be inadvertently turned ON, resulting in
unexpected accidents.
If the main body is left as it is with the battery
inserted, there can be a case where the [switch lock]
touches the floor and/or wall surface and lights up
continuously, depending on the direction of the
body. Be careful, since continuous lighting can easily
make a full-charged battery go dead in about 3
hours.
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2. Cutting procedures
CAUTION
Recheck that the saw blade is securely clamped.
Confirm that the wing nut for adjusting the slot
depth, the wing bolt for adjusting the angle of
inclination are securely clamped.
(1) Place the base on the material, then align the
premarked line and the sawblade with the notch
at the front of the base (Fig. 15).
When the base is not slanted, use the large cutout
as the guide (Fig. 15, Fig. 18(A)).
If the base is slanted (45 degrees), use the small
front scale as the guide (Fig. 15, Fig. 18(B)).
(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.
CAUTIONS
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.
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. 19.
(2) Depress the lock lever, lock the spindle, and remove
the left-hand bolt and washer (B) with the box
wrench.
(3) While holding the lower guard lever to keep the
lower guard fully retracted into the saw cover,
remove the saw blade (Fig. 20).
2. Mounting the Saw Blade
CAUTION
If the left-hand bolt is worked using other tools than
the provided box 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. 21, 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.