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VI. MAINTENANCE
• Use only a dry, soft cloth for wiping the unit.
Do not use a damp cloth, thinner, benzine,
or other volatile solvents for cleaning.
• In the event that the inside of the tool or
battery pack is exposed to water, drain
and allow to dry as soon as possible.
Carefully remove any dust or iron filings
that collect inside the tool. If you experi-
ence any problems operating the tool,
consult with a repair shop.
VII. TIGHTENING
TORQUE
The power required for tightening a bolt will
vary, according to bolt material and size, as
well as the material being bolted. Choose
the length of tightening time accordingly.
Reference values are provided below.
(They may vary according to tightening conditions.)
Factors Affecting Tighten-
ing Torque
The tightening torque is affected by a wide
variety of factors including the followings.
After tightening, always check the torque
with a torque wrench.
1) Voltage
When the battery pack becomes near-
ly discharged, the voltage decreases and
the tightening torque drops.
Bolt Tightening Conditions
EY75A1 14.4 V
M10 x 35 mm M12, M14, M16 x 45 mm
N
m
(kgf-cm)
196.0
（2000）
147.0
（1500）
98.0
（1000）
49.0
（500）
0.0
0.5
Tightening time (Sec.)
EY7546_EY7547_EY7550_EY7551_US.indb 16
EY7546_EY7547_EY7550_EY7551_US.indb 16
Standard bolt
M16
M14
M12
M10
1.0
1.5
2.0
2.5
3.0
EY75A1 14.4 V
M8, M10 x 35 mm. M12 x 45 mm
N
m
(kgf-cm)
196.0
（2000）
147.0
（1500）
98.0
（1000）
49.0
（500）
0.0
0.5
Tightening time (Sec.)
EY75A2 14.4 V
M10 x 35 mm M12, M14, M16 x 45 mm
N
m
(kgf-cm)
196.0
（2000）
147.0
（1500）
98.0
（1000）
49.0
（500）
M12
M10
0.0
0.5
EY75A2 14.4 V
M8, M10 x 35 mm. M12 x 45 mm
N
m
(kgf-cm)
196.0
（2000）
147.0
（1500）
98.0
（1000）
49.0
（500）
M8
0.0
0.5
- 16 -
High tensile bolt
M10
M8
1.0
1.5
2.0
2.5
Standard bolt
M16
M14
1.0
1.5
2.0
2.5
Tightening time (Sec.)
High tensile bolt
M12
M10
1.0
1.5
2.0
2.5
Tightening time (Sec.)
2012-10-10 10:17:44
2012-10-10 10:17:44
M12
3.0
3.0
3.0
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