Manual Hitachi C6BUY (page 12 of 64) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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English

CUTTING PROCEDURES

1. Place the base on the material, then align the

premarked line and the sawblade with the guide

piece front scale section at the front of the base

(Fig. 11).

When the base is not slanted, use the large cutout

as the guide (Fig. 11, Fig. 12 (A)).

If the base is slanted (45 degrees), use the small

front scale as the guide (Fig. 11, Fig. 12 (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.

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.

A coating of PFTE is applied to the bases. Be careful not to

press too hard on the unit body since this tends to place a

heavy load on the motor. Using a gentle pressure will

make the piece slide easier and allow cutting with less

force. Trying to cut wood that is covered with hard particle

material such as sand or metal chips tends to easily

scratch damage the surface coating so use caution.

⅜ Before starting to saw, ensure that the saw blade

has reached full speed revolution.

⅜ Should the saw blade be stopped or made an

abnormal noise during operation, turn off the switch

immediately.

⅜ Always take care in preventing the power cord from

coming near the revolving saw blade.

⅜ Using the circular saw with the saw blade facing

upwards or sideways is very hazardous. Such

uncommon applications should be avoided.

⅜ When cutting materials, always wear protective

glasses.

⅜ 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) Loosen the knob and slightly reduce the cutting

depth from maximum. (Fig. 2)

(2) Place the Circular Saw as shown in Fig. 17.

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

the hexagonal-head bolt with the box wrench.

(4) 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) Loosen the knob and slightly reduce the cutting

depth from maximum. (Fig. 2)

(2) Thoroughly remove any sawdust which has

accumulated on the spindle, bolt and washers.

(3) As shown in Fig. 18, 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.

(4) 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.

(5) Using the fingers, tighten the hexagonal-head bolt

retaining the saw blade as much as possible. Then

depress the lock lever, lock the spindle, and

thoroughly tighten the bolt.

CAUTION

After having attached the saw blade, reconfirm that the

lock lever is firmly secured in the prescribed position.

MAINTENANCE AND INSPECTION

1. Inspecting the saw blade

Since use of a dull saw blade will degrade efficiency

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. Inspecting the carbon brushes (Fig. 19)

The motor employs carbon brushes which are

consumable parts. Since an excessively worn carbon

brush can result in motor trouble, replace the carbon

brushes with new ones having the same carbon

brush No. shown in the figure when it becomes

worn to or near the “wear limit”. In addition, always

keep carbon brushes clean and ensue that they

slide freely within the brush holders.

CAUTION

⅜ When replacing the new carbon brushes, always

use genuine Hitachi carbon brushes with the number

specified in the drawing.

⅜ For models C6BUY and C7BUY, the brake may not

work if other than the specified carbon brushes are

used.

When the brake becomes ineffective, replace the

carbon brushes with new ones.

4. Replacing carbon brushes

Disassemble the brush caps with a slotted-head

screwdriver. The carbon brushes can then be easily

removed.

5. 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.

6. Adjusting the base and saw blade to maintain

perpendicularity

The angle between the base and the saw blade has

been adjusted to 90°, however should this

perpendicularity be lost for some reason, adjust in

the following manner:

(1) Turn the base face up (Fig. 20) and loosen the lever

and wing-bolt. (Fig. 4 (A), Fig. 4 (B))

(2) Apply a square to the base and the saw blade and

turning the slotted set screw with a slotted-head

screwdriver, shift the position of the base to produce

the desired right angle.

01Eng_C6UY_WE 3/25/10, 8:4111

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Hitachi C6BUY Manual

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