. MAINTENANCE SERVICE PROCEDURE WHEN REQUIRED CHECK, CLEAN OR REPLACE AIR CLEANER CHECKING {0.76 kg/cm 2 , , 1.1 PSI}, clean clogged. If this happens, clean the air cleaner element. 4 - 24 Afte r the outer element has been cleaned 6 times, or if the air cleane r eleme nt has been used for o ne year, replace the oute r element, inner e ELEMENT (PAGE 4-28)".
Afte r the outer element has been cleaned, if the m aintenance cautio n lamp l ights up and action co de E01 and AIR FILTER are displayed on t he character display at the same time i mmediately after operations st art, replace the element even if the outer e lement has not been cl eaned 6 times or t he air c leaner element has no t been used for one yea NOTICE Do n ot replace the element bef ore the dust indicator reac hes 7.5 kPa {0.76 kg PSI}. If it is cleaned frequ ently, the filtering effec t of t he air cleaner will dr op, and this will reduce the service life of the e ngine. Check if the dust indic ator (1) displays 7.5 kP 2 1.1 the PSI}. If it is displayin outer element.
REMARK Maintenance caution lamp (2) is on the machine m onitor. If th e maintenance caution l amp lights up and E01 a nd AIR are displayed on character display (3), the air clea