Shandong Taishan Sports Equipment Co.,Ltd
Web: www.taishansports.cn
4) when the lock parts loose (see picture below),raise the handle(1) and use
the M allen wrench to unscrew the hex socket screw(4) on both ends.Hold
the handle (1) tightly, then use the parallel bar clamp (3) to adjust the
wrench.Adjust the left locking nut (2) and the right locking nut (5) evenly
in the direction shown in the figure below, so that the lock device is locked
tightly, and ensure that the hex socket screw (4) is aligned with the locking
nut slot and tightened. Finally, restore the handle (1) to the original position.