Specifications
Technical Specifications
Voltage:12 V DC
Torque: 380N.M(280FT.LB)
Fuse rating : 15A
Square retainer diameter:12.7mm(1/2" )
Included socket diameters:17/19mm,21/23mm(11/16"--3/4",13/16"—7/8")
Included socket diameters:17/19mm,21/23mm(11/16"--3/4",13/16"—7/8")
Operation
CAUTION-material damage
l  Do not overload the tool. Do not apply excessive pressure to the impact wrench. If the screws cannot be moved and the wrench freezes, stop the operation. Either use a more powerful tool or continue with a manual wrench. Do not attempt to continue to turn the screw manually with the impact wrench.
l  Do not operate the tool for longer than a maximum of 10 minutes without interruption. Then take a 10 minute break to allow the wrench to cool down.
 
DANGER-hazard of accident due to faulty screw connections
 
After tightening, check the screw connections for visible signs of damage
 
1.    Plug the 12 volt power adapter plug into the cigarette lighter. The impact wrench is ready for use.
2.    Always thread a screw or nut by hand to start it before tightening with an impact wrench.
3.    Put an appropriately sized socket wrench on the square retainer.
4.    Set the rotation selector to imprinted arrow "REV" for clockwise and imprinted arrow 'FWD' for counter- clockwise rotation .
5.    Press the on/off switch to turn the tool on.
6.    Release the switch to turn the tool off.

Steos:

1) Turn the power switch cars with electric jack lifting the wheels off the ground. (Figure 1)
(2)The power cord into the cigarette lighter or power cable clamp car battery positive (+) and negative (-) pole. (Fig. 2)
(3) Select the right sleeve, the sleeve into the square hole of the square shaft electric wrench head.
(4)In the desired direction of the work, choose loose, tight switch (anti-thread the switch in the opposite direction); tighten the nut, hold down the switch (left sign "|"), heard 2-3 times impact "despair" after the time to loosen the nut loose, hold down the switch (left sign "||") 2-3 times "despair, despair" percussion; sound crash to loosen the thumb; middle symbol  at stop open thumb. (Fig. 3, Fig. 4)