. SAFETY PRECAUTIONS FOR MAINTENANCE interval. 2 - 32 PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS In order fo r the machine to be operate d safety for a long time, it is necessary to add oil and t o carry out service and maintenance at periodic i ntervals. In order to further increas e safety, components with a strong r elationship to safety, such as hoses and seat belt s, must be replaced at pe riodic Replacement of safety critical parts: S ee PAGE 4-15)" The mater ial of these components naturally changes over time, a nd repeated use causes deterioration ,wear, and fatigue. A s a r esult, there is a hazard that these components may fa il and cause s erious in jury or d eath.
It is difficult to judg e the remaining life of th ese components from ex ternal inspection or the feeli ng when operating, so always replace them at the specifie d interval. Replace o r repair safety-critica l parts if any defect is found, even when they have no t reache d the tim e specified