Make sure that the inclined tongue slope is in the same direction as the closing direction, and make a hole according to the installation paper planning line (as shown in the figure below: A).
Put the lock body into the hole; pre-tighten the liner screw (as shown below: BC).
Remove the cover and insert the square core through the door panel into the square hole of the lock body (as shown in the figure below: D).
Install the inner and outer handle ring components to make the handle rotate smoothly, and tighten the screws (above: E).
Screw in the outer cover, install the gusset and buckle box, align the lock body, and make the lock tongue fit smoothly (above: FG).