Turn the PROPEDAL lever to the PROPEDAL position, as shown in graphic above.
如上图图所示，将当调节杆拨于PROPEDAL位置。
2
PS: the ProPedal knob should NOT be adjusted on-the-fly. It should only be adjusted while in a stationary position.
注意：一定要确保每次调节后要把旋钮按下以固定其位置。
3
The ProPedal knob clicks twice per setting as it turns. The first click occurs as you exit the current setting; the second click as you engage the new setting.