Hitachi CL 10D2 Technical Data And Service Manual page 14

(9) Do not attempt to disassemble the storage battery or the charger.
Special devices, such as a thermostat, are built into the storage battery and charger to permit rapid charging.
Incorrect parts replacement and/or wiring will cause malfunctions which could result in fire or other hazards.
Instruct the customer to bring these units to an authorized service center in the event repair or replacement is
necessary.
(10) Disposal of the Model EB 1230H or EB 12B Storage Battery
Ensure that all customers understand that Model EB 1230H or EB 12B Storage Batteries should be turned
into any Hitachi Power Tool sales outlet or authorized service center when they are no longer capable of
being recharged or repaired. If thrown into a fire, the batteries may explode, or, if discarded indiscriminately,
leakage of the cadmium compound contained in the battery may cause environmental pollution.
(11) Perform cutting only after confirming that the threads of the stud cutter properly engage the threads of the
stud. If the threads are not properly engaged, damage to the threads of the stud during cutting may make the
stud unusable, and/or the cutter blade may be damaged.
(12) Ensure that the portion cut off of the stud is at
least 10 mm in length.
As the blade portion of the cutter is very thin,
if only one or two threads of the cutter are
engaged with the threads of the stud, as
illustrated in Fig. 13, the excessive
concentration of load on the blade portion will
cause it to break after only a few cutting
operations. The length of stud cut off should
be at least 10 mm. Instruct customers to
confirm that all of the threads of the cutter
engage the threads of the stud during cutting.
(13) Care should be exercised when performing cutting in narrow places.
For example, in building construction work, studs that are used to hang ducts are often fitted with L-shaped
angles. Instruct the customers to ensure that there is a clearance of at least 8 mm between the stud and the
angle when 25 mm or 30 mm L-shaped angles are used, as illustrated in Fig. 14, before starting the cutting
operation. If the clearance is less than 8 mm, Bracket (A) will come in contact with the side surface of the
angle, preventing proper engagement of the threads of the cutters and the threads of the stud, and causing
damage to the threads of the stud and/or the cutter blade.
Also, since the minimum cutting length of a stud is 14 mm from the surface of the nut, the stud can be cut off
at a point 5 mm within the tip of the angle in the case of a 30 mm L-shaped angle, and approximately even
with the tip of the angle in the case of a 25 mm L-shaped angle, as illustrated in Fig. 14. If cutting is
attempted shorter than indicated, Bracket (A) will come in contact with the nut, causing possible damage to
the cutter. Accordingly, particular caution is necessary.
10 mm or more
--- 11 ---
Cutter
Damaged blade
Cutter
Fig. 13