Jack A3 - Hook Adjustment; Hook Timing and Clearance Adjustment

Mechanical adjustment-Adjustment of the hook
Turn the handwheel to make the hook tip to the center needle, and then
continue to turn the handwheel to make the needle from down to up in 2.2
2.5 mm, then to keep hook tip to above the pinhole between 1-1.2 mm, and
also the horizontal distance between needle and the hook tip is 0-0.1 mm.
1-1.2mm