torque wrench
http://www.sears.com/craftsman-micro-clicker-torque-wrench-3-8inch-drive/p-00931423000P?prdNo=3&blockNo=3&blockType=G3
"把皮带轮转到0”是否就是Setting No.1 Cylinder to TDC? “上止点” = TDC"
没错,不过在0时是压缩行程完成以后的上止点,compression top dead center.TDC也可以是排气行程的 上止点,只有在0时才是compression top dead cente。