ATTACHMENTS AND OPTIONS MACHINE READY FOR ATTACHMENT LONG TERM STORAGE 0. If the machine is not to be used for a long time, do as follows. Set the stop valve in the LOCK condition. Install a blind plug to the elbow installed to the stop valve. Set the selector valve to the position for general attachment. Set the lock plate to the LOCK position to make it impossi- ble to depress the pedal. 6-19