4.8V Mini Cordless Screwdriver Electric Power Drill Tools Drill Electric Screwdriver

The electric screwdriver shall be powered on and operated for one minute. When it is operated, it shall be held by hand. The hand shall not feel any abnormal vibration obviously. Observe the reversing spark. The reversing spark shall not exceed 3/2 level. Generally, when viewed from the air inlet of the electric screwdriver, there shall be no obvious arc light on the surface of the commutator. There shall be no abnormal noise during operation.

Before plugging in the power supply, the switch should be positioned in the off state. Pay attention to whether the power supply voltage is suitable for the use of the machine. When the electric screwdriver is not in use or the power is off, the plug should be turned off. When using, do not set the torque adjustment too large. When replacing the screwdriver head, be sure to pull the power plug away from the power socket and turn off the power of the screwdriver. Do not drop or hit the electric screwdriver during use.