. MAINTENANCE SERVICE PROCEDURE 4 - 90 EVERY 8000 HOURS SERVICE Maintenance for every 250, 500 , 1000, 2000 , and 4000 hours service should be carried out at the same time. REPLACE HIGH-PRESSURE PIPING CLAMP Ask your Komatsu distributor to perform this work. REPLACE FUEL SPRAY PREVENTION CAP Ask your Komatsu distributor to perform this work. OVERHAUL STARTING MOTOR AND ALTERNATOR Ask your Komatsu distributor to perform this work.