SICE S 52A Manual De Instrucciones página 42

TUBED TIRES:
Move the bead hook to the inboard position on the tire carriage. Ensure the hook is secured with the pin.
Move the bead hook towards the tire using the inboard/outboard controls.
Bring the reference mark on the bead hook to the edge of the wheel and insert bead lever.
Push the bead lever towards the wheel to create a traction point.
Rotate the tire in the proper direction to cause the bead lever to move away from the bead hook.
Continue rotation until the tire is removed from the wheel.
42
When the first bead is free of the tire, continue rotating the tire until the valve stem is at bottom
dead center. Remove the tube and continue with the directions below.
Tire not shown for clarity.
The operator is using a clock-wise direction in this photo.
S 52A Operator's Manual