Hunter TCX56 Operating Instructions Manual page 43

Adjust the position of the bead pressing disc to suit the diameter of the rim.
Use the knob to adjust the distance between the disc and the tool head (); the distance must
be as small as possible.
Turn the rotary arm of the PT anti-clockwise until it is next to the fixed arm.
Fit the edge guard at about 4 o'clock, or in the traction point, if different.
Lower the PT arms carriage until the tyre bead is level with the well of the rim.
Start rotating the chuck, at the same time guiding rotation of the mobile arm with your hand.
During this stage, check that the section of bead between the fixed and mobile discs remains
inside the well of the rim
If it does not, repeat the operation from the beginning, increasing the initial pressure.
Operation Instructions for TCX56/57 Tire Charger 43