Manual

English I

z_ WARNING ' Be sure to switch the power switch OFF and disconnect the

ptug from the receptacle during maintenance and inspec-

tion.

1. Replacing the depressed center wheel

Replace the depressed center wheel when it has been worn out to about 2-3/8"

(60mm) in external diameter. Confirm that there is no crack or any damage to the

depressed center wheel. If there is a crack or a transformation in the wheel,

replace it immediately.

2. Inspecting the mounting screws

Regularly inspect all mounting screws and ensure that they are properly tight-

ened. Should any of the screws be loosened, retighten them immediately.

WARNING " Using this grinder with loosened screws is extremely dan-

gerous.

Confirm that there is no damage in the

wheel guard, the cord and housing, etc.

Furthermore, confirm that there is no abnormali-

ty in the activation of the switch.

Inspecting the carbon brushes(Fig. 4)

The motor employs carbon brushes which are

consumable parts. Replace the carbon brush

with a new one when it becomes worn to its

wear limit. Always keep carbon brushes clean

and ensure that they slide freely within the

brush holders.

Z_CAUTION " Using this grinder with a carbon

brush which is worn in excess of

the wear limit will damage the

motor.

No. of carbon

Wear limit brush

I i _.24"(6mm)

L._ ..................................................

0.67"(17mm)

Fig. 4

NOTE " Use HITACHI carbon brush No.43 indicated in Fig. 4.

'_' Replacing a carbon brush:

Remove the brush cap (Fig. 1) with a slotted screwdriver. The carbon brush can

then be easily removed.

5. Service and repairs

All quality power tools will eventually require servicing or replacement of parts

because of wear from normal use. To assure that only authorized replacement

parts will be used, all service and repairs must be performed by a HITACHI

AUTHORIZED SERVICE CENTER, ONLY.