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• Connect the tool.
• Firmly hold the tool.
• To make the square drive turn clockwise (tighten), press
the lower part of the switch (F).
• To make the square drive turn counter clockwise
(loosen), press the upper part of the switch (R).
• To stop the square drive, release the switch.
• Wait until the motor comes to a complete stop before
changing the rotation direction.
Operation
• Securely hold the tool and place the nut onto the screw or bolt.
Start the tool and tighten for the appropriate amount of time.
NOTE:
• When attaching an M10 (3/8") or smaller screw, carefully adjust the pressure on the switch so that the
screw is not damaged.
• Hold the tool pointed directly at the bolt or nut without applying excessive pressure to the tool.
•If a screw is tightened for a very long period of time, the screw or nut can become fatigued, damaged, etc.
• Before beginning your work, always run a test operation to determine the appropriate time for your
screw. Especially for screws larger than M10 (3/8"), the above test operation should be done to prevent
problems in the nut or screw, etc.
• The tightening torque is affected by a wide variety of factors including the following. After tightening,
always check the tightening torque with a torque wrench.
1.Voltage.
- Voltage drop will cause a decrease in the clamping force.
2.Nut.
- If the correct size nut is not used, the tightening torque will be reduced.
- If a worn nut is used (wear on the hex end or on the square end), the tightening torque will be reduced.
3.Screw
- Even if the torsion coefficient and screw class are the same, the appropriate tightening torque will vary
depending on the diameter of the screw. Even if the diameter of the screw or bolt is the same, the correct
tightening torque will vary according to the torsion coefficient, class and length of the bolt or screw.
4.Material.
- The type of material and the surface finish of the material will affect the tightening torque.
5.Tightening Time.
Longer tightening periods will result in a higher tightening torque.
Using a longer tightening period than recommended could cause the fastener parts to roll or damage the
threads or screw parts.
6 .The way you hold the tool or material in the tightening position will affect the torque.
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