Preset torque wrench GYB-110N，(1/2'')，10-110N.m
GYB-30N is suitable for various mechanical units.
This preset wrench features a ratchet and dual-direction adjustment, with 72 gears for high precision, suitable for mountain and road bicycles.
STAMPED PATTERN HANDLE，NON-SLIPGRIP HANDLE
READ BEFORE YOU USE
1.This torque wrench is a precision instrument intended to be used only to tighten screws,bolts and nuts to a desired torque.
2.Do not use it as a ''nut breaker'',pry bar,hammer,or in lieu of a regular ratchet wrench.
3.Do not apply torque in excess of the maximum capacity of the wrench .Apply load on the grip only,and do not use any handle extension bars(a piece of pipe put over the grip).
4.Make sure that you adjust the wrench to the exact torque units your specifications call for,or you will severely under-torque or over-torque,causing severe damage to the equipment you are working on.
5.Do not disassemable the wrench for any reason.Highly stressed internal components may cause severe injury when released in an unintended manner.
6.The wrench should be re-cailbrated periodically.The calibration of the wrench should be checked at least once a year, after any abnormal handing or overloading,or after 5,000cycles(''clicks'').
SETTING TORQUE
1.Pull the lock knob out downside.The locking and unlocking directions are indicated by appropriate icons on the lock knob.
2.Turn the grip in the clockwise direction to increase the torque,and in the counterclockwise to decrease it.
3.The major scales show the amount of torque in both primary and secondary units.The minor scale shows fine increments in primary units.See examples on the next page.
4.Push the lock knob back to lock the grip.The minor scale may move a small amount to either side of the centerline mark without affecting the accuracy of your setting.
USE OF EXTENSIONS
Extensions that put the center of the fastener being tightened away from the centerline of the ratchet drive,result in the effective torque being different from the one shown on the wrench.Consequently，the torque set on the wrench must be corrected using the formula shown on the next page.
APPLYING TORQUE
1.Insert an appropriate socket or drive attachment onto the square drive of the ratchet and onto the fastener you want to tighten.
2.Apply hand pressure to the grip,and ONLLY TO THE GRI.You may support the wrench at the ratchet head with the other hand to steady it,especially when using long socket extensions,without appreciably affecting the accuracy of the wrench.
3.If,due to the required effort,you need to use both hands,put the other hand on the top of the first hand,never on any other part of the wrench.
4.Apply slow and steady pull or push until the wrench momentarily releases,with or without a distinct ''click'' sound.Release the pressure right at this point. DO NOT OVERTORQUE!
SAFETY WARNING
Overtorqued or defective fasteners ，sockets，as well as the wrench itself，may suddenly break causing you to lose balance,fall,or to suffer other trauma.Be sure that you have firm foooting,are properly balanced,and if necessary are using appropriate harness,back support,or other safety device.
MAINTANANCE
1.When not in use,adjust the wrench to its lowest reading(except on Presset and Electronic torque wrenches),and store it in the provided case.
2.With the exception of the ratchet mechanism ,do not lubricated the wrench .The ratchet mechanism may be lubricated as needed with a few drops of light machine oil.
3.Do not use acetone or other solvents to clean the wrench,use window cleaner or denatured alcohol applied with a clean cloth instead.
4.With the exception of the ratchet mechanism, there are no user-serviceable parts.Do not disassemble the torque wrench for any reason.When service is needed,send the wrench to the nearest factory-authorized service center.
CERTIFICATION
This torque wrench is cerified to have been calibrated prior to shipment to the accuracy of +/-4% in the clockwise direction.
