Manual Hitachi CM9SR (page 9 of 56) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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English

PRIOR TO OPERATION

1. Power source

Ensure that the power source to be utilized conforms

to the power requirements specified on the product

nameplate.

2. Power switch

Ensure that the power switch is in the OFF position.

If the plug is connected to a power receptacle while

the power switch is in the ON position, the power

tool will start operating immediately, which could

cause a serious accident.

3. Extension cord

When the work area is removed from the power

source, use an extension cord of sufficient thickness

and rated capacity. The extension cord should be

kept as short as practicable.

4. Checking and installing the diamond wheel

Check the diamond wheel is a specified one and

is not cracked, broken or bent. Check the diamond

wheel is installed securely. For installation, refer to

“Installing/removing diamond wheel”.

5. Fitting and adjusting the dust collection cover (Fig. 1,

Fig. 2)

The dust collection cover is a protective device to

prevent injury should the diamond wheel shatter

during operation. Ensure that the cover is properly

fitted and fastened before commencing cutting

operation.

[Installing and adjusting the dust collection cover]

⅜ Open the lever and insert the locating pin of dust

collection cover, bringing it into line with the across

flats of packing ground.

⅜ Then, turn the dust collection cover to a desired

position (for use).

⅜ Close the lever and fix it. If and when required, carry

out adjustments by tightening or loosening the screw.

⅜ If the lever does not move smoothly, apply some

lubricating oil to the sliding section between the set

piece and the lever.

⅜ Fasten the dust collection cover at the position where

the across flats of the dust collection cover

positioning pin and packing ground are aligned (the

position where the dust collection cover is inserted),

but do not use it.

6. Confirm the spindle lock mechanism

Confirm that the spindle lock is disengaged by

pushing push button two or three times before

switching the power tool on (See Fig. 1).

7. Cutting depth adjustment (Fig. 3)

Lowering the wing nut will loosen and raising it will

tighten.

Loosening the wing nut and moving the base will

allow adjustment of the cutting depth.

CAUTIONS

⅜ Leaving the wing nut loosened may result in injury.

Securely tighten the wing nut after adjusting the

cutting depth.

INSTALLING DUST COLLECTION HOSE

When cutting a material which generates cutting dust,

use the dust collection hose as follows:

(1) Remove the rubber cap and install the accessory

adaptor. (Fig. 4)

(2) Install the dust collector hose for the power tool in

the accessory adaptor. (Fig. 4)

CAUTION

⅜ Always install a rubber cap on the dust collection

adaptor when the dust collection hose is not used.

INSTALLING/REMOVING DIAMOND WHEEL

1. Installation

(1) Loosen the knob nut and remove the cover (B).

(2) Wipe the cutting dust from the spindle and washers.

(3) Make sure the rotation direction of the diamond

wheel conforms to the direction indicated on the

gear case and install the diamond wheel as shown

in Fig. 1.

(4) Press the lock pin and secure the spindle. Tighten

the wheel nut adequately with the provided wrench.

(Fig. 1)

NOTE

⅜ Always use the provided wrench to secure the wheel

nut.

2. Removal

Remove the wheel nut with the provided wrench

and remove the diamond wheel. (Fig. 1)

CUTTING

1. Cutting procedures (Fig. 5)

(1) Place this tool on the material to be cut and align

the cutting line and the diamond wheel.

The cutting can be performed smoothly if you cut

straight ahead on the cutting line in the initial cut.

(2) Turn on the switch when the diamond wheel is not

touching the material to be cut.

2. Switch operation

Switch ON: Push the locking button forward and

then press the switch lever.

* For continuous use, press the switch

lever. The switch lever is locked by

pushing the locking button forward

once again.

(*Subject to change depending on

area.)

Switch OFF: Press and release the switch lever.

3. Precautions immediately after finishing operation

After switching off the machine, do not put it down

until the depressed center wheel has come to a

complete stop. Apart from avoiding serious accidents,

this precaution will reduce the amount of dust and

swarf sucked into the machine.

CAUTION

⅜ Always check the diamond wheel before starting

work. Never use a diamond wheel which is cracked,

broken or bent.

⅜ Do not apply water or coolant to the diamond

wheel.

⅜ Start cutting only when diamond wheel reaches its

maximum speed.

⅜ If the diamond wheel seizes or there is any abnormal

noise, immediately turn the power off.

⅜ Never use the diamond wheel to cut zigzag or

curved lines. Never use the side surface of the

diamond wheel. Never use to perform inclination

cutting.

01Eng_CM9SR_WE 6/30/08, 18:168

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Hitachi CM9SR Manual

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