Part No. 57.0009.0454 GTH-4013EX - GTH-4514EX - GTH-4017EX 15Operator’s ManualSecond Edition - Second PrintingDAMAGED MACHINE HAZARDS Do not use a damaged or defective machine. Do a thorough pre-operation inspection of themachine and test all functions before each workshift. Tag and remove from service a damagedor defective machine. Make sure that all maintenance jobs have beencarried out as specified in this manual and theappropriate service manual. Make sure that all decals are in place andlegible. Make sure that the operator’s is intact, legibleand placed in the special container located in themachine.PERSONAL INJURY HAZARDS Do not operate the machine in case of hydraulicoil or air leak. Air or hydraulic oil leaks canpenetrate or burn the skin. Always operate the machine in a well ventilatedarea to avoid carbon monoxide poisoning. Do not lower the boom if the area underneath isnot clear of personnel or obstructions.SAFETY DEVICESSeveral safety devices have been fitted to themachine. They must never be tampered with orremoved.Regularly check the efficiency of such devices.In case of faults, stop working immediately andproceed in replacing the defective device.For the checking procedures, read chap."Maintenance"MOMENT LIMITING SYSTEMThe moment limiting system has been developed tohelp the operator to maintain the machine longitudinalstability. Audible and visual messages are providedwhen the limits of longitudinal stability are beingapproached.However this device cannot replace the experienceof the operator. It is up to the user to adopt thenecessary safety measures to work within the ratedlimits of the machine.Safety PrecautionsCourtesy of Crane.Market