SAFETY EQUIPMENT OF HEAD GUARD, ROPS, FOPS In case the machine is operated in areas where the possibility of falling stones or debris exist, equip a head guard, ROPS, or FOPS according to the poten- tial hazardous conditions. (The standard cab for this machine corresponds to ROPS and FOPS.) ROPS: Roll-Over Protective Structure FOPS: Falling Object Protective Structure SA-521 PROVIDE SIGNALS FOR JOBS INVOLV- ING MULTIPLE NUMBERS OF MACHINES For jobs involving multiple numbers of machines, provide signals commonly known by all personnel involved. Also, appoint a signal person to coordinate the job site. Make sure that all personnel obey the signal person’s directions. 018-E01A-0481 SA-481 SA-9