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。

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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。

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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.

当转动旋钮改变每个档位时会发出两声咔嗒声，第一下是表明推出当前档位，第二下是进入下一个档位。

youdao

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.

当转动旋钮改变每个档位时会发出两声咔嗒声，第一下是表明推出当前档位，第二下是进入下一个档位。

youdao