EVERY 1000 HOURS SERVICE * To fit the cartridge, put the seal face in contact with head, then screw it up by hand about l/2 to 3/4 of a turn. (Be careful not to apply excessive torque.) 5. After replacement, open valve (I). * Be sure to use a genuine Komatsu cartridge. * After replacing the cartridge, start up the engine and check the filter seal face for possible oil leakage. W-04306 - 95 -