Maintenance And Inspection - Hitachi C 7BMR Bedienungsanleitung

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CAUTION

To avoid possible accident, always ensure that the

portion of lumber remaining after cutting is se-

curely anchored or held in position.

ADJUSTING THE SAW PRIOR TO USE

1. Adjusting the cutting depth

To adjust cutting depth, loosen the lever (A) and,

while holding the base with one hand, move the

main body up and down to obtain the prescribed

cutting depth. After adjusting to the prescribed cutting

depth, tighten the lever (A) securely (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 lever (A) at the scale, the saw

blade can be inclined up to maximum angle of 45°

against the base.

After adjusting to the prescribed angle of inclination,

tighten the lever (A) securely.

CAUTION

Should this lever (A) remain loosened, it will create

a very hazardous situation. Always thoroughly clamp

it.

3. Regulating the guide

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 (Fig. 4).

4. Using the dust collector

To use the vacuum cleaner to gather up saw dust,

attach the suction hose to the dust collector which

is attached to the main unit by M4 and M5 screws.

When attaching the dust collector always be sure

to change the lever to the short type at the same

time (Fig. 11).

CAUTION

Continuing to use the lever that was attached to

the main unit prior to shipping from the factory will

cause it to bind on the dust collector and will

interfere with the lower guard operation.

CUTTING PROCEDURES

1. Place the saw body (base) on the lumber, and align

the intended line of cut with the saw blade, using

the notch at the front of the base. This relationship

of base to lumber should remain unchanged

regardless of the inclination of the base (Fig. 5).

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.

3. Moving the saw straight at a constant speed will

produce optimum cutting.

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, confirm 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 finished 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. 6.

(2) Depress the lock lever, lock the spindle, and remove

the hexagonal-flange bolt 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.

2. Mounting the Saw Blade

(1) Thoroughly remove any sawdust which has accu-

mulated on the spindle, bolt and washers.

(2) As shown in Fig. 7, 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.

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 fingers, tighten the hexagonal-flange bolt

retaining the saw blade as much as possible. Then

depress the lock lever, lock the spindle, and thor-

oughly tighten the bolt.

CAUTION

After having attached the saw blade, reconfirm that the

lock lever is firmly secured in the prescribed position.