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ADJUSTING THE POWER TOOL PRIOR TO
USE
1. Adjusting the cutting depth
The cutting depth can be adjusted by moving the
base after loosening its lever (A) (Fig. 2).
CAUTION
Should this lever (A) remain loosened, it will create
a very hazardous situation. Always thoroughly
clamp it.
2. Adjusting the angle of inclination
By loosening the wing bolt at the scale, the saw
blade can be titled up to maximum angle of 45°
against the base (Fig. 3).
The angle of inclination can also be regulated by
loosening the wing bolt at the scale (Fig. 3).
CAUTION
It is very hazardous to allow this wing bolt to
remain loosened.
Always thoroughly clamp it.
3. Regulating the guide (Optional accessory)
The cutting position can be regulated by moving
the guide to the left or right after loosening its
wing bolt.
The guide can be mounted on either the left or
the right side.
CUTTING PROCEDURES
1. Place the saw body (base) on the lumber, and
align the cutting line with the saw blade at the
front scale (Fig. 4).
2. Turn ON the switch before the saw blade contacts
the lumber. The switch is turned ON when the
trigger is squeezed, and turned OFF when the
trigger is released.
CAUTIONS
Prior to cutting operation, make sure the material you
are going to cut. If the material to be cut is expected to
generate harmful / toxic dusts, make sure the dust bag
or appropriate dust extraction system is connected with
dust outlet tightly.
Wear the dust mask additionally, if available.
○ Before starting to saw, confi rm that the saw blade
has attained full-speed revolution.
○ Should the saw blade stop or make an abnormal
noise while operating, promptly turn OFF the
switch.
○ Always take care in preventing the power cord
from coming near to the revolving saw blade.
○ Using the circular saw with the saw blade facing
upwards or sideways is very hazardous. Such
uncommon applications should be avoided.
○ When cutting materials, always wear protective
glasses.
○ When fi nished with a job, pull out the plug from
the receptacle.
MOUNTING AND DISMOUNTING THE SAW
BLADE
CAUTION
To avoid serious accident, ensure the switch is in the OFF
position, and the power source is disconnected.
1. Dismounting the saw blade
(1) Set the cutting volume at maximum, and place
the Circular Saw as shown in Fig. 5.
(2) Depress the lock lever, lock the spindle, and
remove the hexagonal-socket bolt with the hex.
bar wrench.
8
(3) While holding the lower guard lever to keep the
lower guard fully retracted into the saw cover,
remove the saw blade.
2. Mounting the Saw Blade
(1) Thoroughly remove any sawdust which has
accumulated on the spindle, bolt and washers.
(2) For saw blades with hole diameters of 20 mm and
30 mm, as shown in Fig. 6-1, 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 fi tted to the
saw blade sides.
For saw blades with a hole diameter of 15.9 mm,
as shown in Fig. 6-2, the concave side of Washer
(A) and the concave side of Washer (B) must be
fi tted to the saw blade sides.
*
If the saw blade supplied with your circular
saw has a hole diameter of 15.9 mm, only
saw blades with the same size hole diameter
can be fi tted to your circular saw.
*
Washer (A) is supplied for 2 types of saw
blades with the hole diameters of 20 mm and
30 mm. (When buying the Circular Saw, one
type of washer (A) is supplied.)
In case the hole diameter of your saw blade
does not correspond to that of washer (A),
please contact the shop where you purchased
the Circular Saw.
(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 fi ngers, tighten the hexagonal-socket
bolt retaining the saw blade as much as possible.
Then depress the lock lever, lock the spindle, and
thoroughly tighten the hexagonal-socket bolt.
CAUTION
After having attached the saw blade, reconfi rm that the
lock lever is fi rmly secured in the prescribed position.
MAINTENANCE AND INSPECTION
1. Inspecting the saw blade
Since use of a dull saw blade will degrade effi ciency
and cause possible motor malfunction, sharpen
or replace the saw blade as soon as 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 loose, retighten them immediately.
Failure to do so could result in serious hazard.
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 not
become damaged and/or wet with oil or water.
4. 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.
5. Replacing supply cord
If the replacement of the supply cord is necessary,
this has to be done by the manufacturer of this
agent in order to avoid a safety hazard.
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