24. SERVICE PROCEDURE 24.1 INITIAL 250 HOURS SERVICE Carry out the following maintenance only after the first 250 hours. REPLACE FUEL FILTER CARTRIDGE AND ADDITIONAL FUEL FILTER CARTRIDGE (MACHINES EQUIPPED WITH ADDITIONAL FUEL FILTER) CHECK ENGINE VALVE CLEARANCE, ADJUST For details of the method of replacing or maintaining, see the section on EVERY 500 HOURS and 2000 HOURS SERVICE. PC130/150LGP-6K ENG 3-24