Manual Hitachi H41SC (page 7 of 44) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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English

CAUTION

Be sure to grip the handle and side handle during

work. Do not hold by the slide grip during work.

If you pull it by mistake, the bull point could jump

out.

HOW TO USE THE DEMOLITION HAMMER

(Fig. 2)

1. After placing the tip of the tool on concrete surface,

switch ON.

2. By utilizing the weight of the machine and by firmly

holding the demolition hammer with both hands,

one can effectively control the subsequent recoil

motion.

Proceed at a moderate work-rate, the use of too

much force will impair efficiency.

GREASE REPLACEMENT

This machine is of full air-tight construction to protect

against dust and to prevent lubricant leakage. This

machine can be used without grease supplement for an

extended period of time. However, perform the grease

replacement to maintain the service life. Replace the

grease as described below.

1. Grease Replacement Period

You should look at the grease when you change

the carbon brush (See item 4 in the section

MAINTENANCE AND INSPECTION). Ask for grease

replacement at the nearest authorized Hitachi Service

Center.

In the case that you are forced to change the grease

by yourself, please follow the following points.

2. How to replace grease

CAUTION

Before replacing the grease, turn the power off and

pull out the plug from the receptacle.

(1) Remove the crank cover and wipe off the old grease

inside (Fig. 3).

(2) Supply 30 g (the standard volume to cover the

connecting rod) of Hitachi Electric Hammer Grease

A to the crank case.

(3) After replacing the grease, install the crank cover

securely.

NOTE

The Hitachi Electric Hammer Grease A is of the low

viscosity type. When the grease is consumed,

purchase from an authorized Hitachi Service

Center.

MAINTENANCE AND INSPECTION

CAUTION

Be sure to switch power OFF and disconnect the

plug from the receptacle to avoid serious trouble.

1. Inspecting the tool

Since use of a dull tool will degrade efficiency and

cause possible motor malfunction, sharpen or

replace the tool 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 (Fig. 4)

The Motor employs carbon brushes which are

consumable parts. When they become worn to or

near the “wear limit”, it could result in motor

trouble. When an auto-stop carbon brush is

equipped, the motor will stop automatically. At

that time, replace both carbon brushes with new

ones which have the same carbon brush Numbers

shown in the figure. In addition, always keep carbon

brushes clean and ensure that they slide freely

within the brush holders.

5. Replacing carbon brushes

Loosen the set screw and remove the tail cover.

Remove the brush caps and carbon brushes. After

replacing the carbon brushes, do not forget to

tighten the brush caps securely and to install the

tail cover.

6. Service parts list

A: Item No.

B: Code No.

C: No. Used

D: Remarks

CAUTION

Repair, modification and inspection of Hitachi Power

Tools must be carried out by a Hitachi Authorized

Service Center.

This Parts List will be helpful if presented with the

tool to the Hitachi Authorized Service Center when

requesting repair or other maintenance.

In the operation and maintenance of power tools,

the safety regulations and standards prescribed in

each country must be observed.

MODIFICATIONS

Hitachi Power Tools are constantly being improved

and modified to incorporate the latest technological

advancements.

Accordingly, some parts (i.e. code numbers and/or

design) may be changed without prior notice.

GUARANTEE

We guarantee Hitachi Power Tools in accordance with

statutory/country specific regulation. This guarantee does

not cover defects or damage due to misuse, abuse, or

normal wear and tear. In case of complaint, please send

the Power Tool, undismantled, with the GUARANTEE

CERTIFICATE found at the end of this Handling

instruction, to a Hitachi Authorized Service Center.

NOTE

Due to HITACHI’s continuing program of research and

development, the specifications herein are subject to

change without prior notice.

01Eng_H41SC_WE 10/2/09, 16:246

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Hitachi H41SC Manual

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