把左邊的鎖螺鬆掉,(用手旋轉,If it is too tight, use a screw driver and tap it in the tangential direction). 用手指或可調板手轉中間的蓋到底,然後倒退一兩度.
If you want to remove the bottom bracket, remember that on the left side, it is a right-hand thread and on the chain ring side, it is a lefthand thread for Asian and English bikes. (use your four fingers to indicate the direction of rotation, the thumb, the direction of advance)