12. OPERATION 7. Turn fuel control dial a to the full speed (MAX) position and carry out the operation is Step 6 for 3 -5 minutes. 8. Repeat the following operation 3 - 5 times and operate slowly. Boom operation RAISE vn LOWER Arm operation IN vn OUT Bucket operation CURL vn DUMP Swing operation LEFT vn RIGHT Travel (Lo) operation FORWARD vn REVERSE REMARK If the above operation is not carried out, there may be a delay in response when starting or stopping each actuator, so continue the operation until it becomes normal. 9. Use working mode switch b on the monitor panel to switch to the working mode to be used. PC450-ENG 2-55