21 HANDLING THE SAFETY DEVICES Control lever lock 3 CAUTION When the excavator is not used or left unattended, be sure to place the lock lever in "Lock" position . The attachment control lever lock is located on the left side. (1) Lock lever for attachment (A) “Lock” control (B) “Unlock” Swing lock pin This pin is used to lock the swing frame. Set the lock pin to the “Lock” position and the swing frame gets locked to the track frame. IMPORTANT: Before locking the lock pin, be sure to place the swing frame and the track frame in parallel with each other. (1) Swing lock pin (A) “Unlock” (B) “Lock”