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7. PRECAUTIONS IN SALES PROMOTION
In the interest of promoting the safest and most efficient use of the Model H 60KA Electric Hammer by all of our
customers, it is very important that at the time of sale the salesperson carefully ensures that the buyer seriously
recognizes the importance of the contents of the Handling Instructions, and fully understands the meaning of the
precautions listed on the Caution Plate attached to each tool.
7-1. Handling Instructions
Although every effort is made in each step of design, manufacture and inspection to provide protection against
safety hazards, the dangers inherent in the use of any electric tool cannot be completely eliminated. Accordingly,
general precautions and suggestions for the use of electric power tools, and specific precautions and suggestions
for the use of the Electric Hammer are listed in the Handling Instructions to enhance the safe, efficient use of the
tool by the customer. Salespersons must be thoroughly familiar with the contents of the Handling Instructions to
be able to offer appropriate guidance to the customer during sales promotion.
7-2. Caution Plate
The Model H 60KA unit is provided with a Caution Plate (illustrated below) which lists basic safety precautions in
use. Carefully ensure that the customer fully understands and follows these precautions before using the tool.
CAUTION
Read thoroughly HANDLING INSTRUCTIONS
before use.
Hitachi Koki
For Australia
7-3. Grease Replacement
The striking portion and the speed reduction portion of the Model H 60KA respectively use different types of
grease. Grease replacement is required if the unit is disassembled for maintenance or O-rings become damaged
or worn as described in 7-4.
The striking portion uses special grease. If the striking portion (inside the cylinder case and crank case) is
disassembled, thoroughly remove all of the old grease from each part. On reassembly, insert 60 g (2.1 oz) of new
grease into the crank case (connecting rod side). Do not exceed the designated amount of grease. Excessive
grease insertion may cause reduced striking performance.
The speed reduction portion (inside the gear cover) uses Hitachi Motor Grease No. 29 (Code No. 930035). The
proper supply volume is 40 g (1.4 oz). Never use the striking portion special grease in the speed reduction
portion. Special grease would leak into the motor portion and cause subsequent trouble.
7-4. O-Ring Replacement
The O-rings (mounted on the striker and piston) are extremely important to ensure adequate sealing of the air
pressure. Although the O-rings are made of special rubber to give them a long service life, they do nonetheless
become worn, and should be replaced by new ones periodically depending on frequency of use of the tool. With
average use, it is recommended that the O-rings be replaced at least every six months to ensure maximum
effectiveness.
