. MAINTENANCE SERVICE PROCEDURE MAINTENANCE SERVICE PROCEDURE 4 - 29 5. After th e cooling fan rev erse rotation pilot lamp on the machine monito r flashes, check that it lights up . At t he same time "COOLING FAN REVE RSE" is displayed on characte display and the fan is s 6. Run th e engine at high Select the time for runn ing the engine at high id le as follows a ccording to the condition of clogging. Norma l clogging: 1 to 2 Excessive clogging: 2 t 7. When the cleaning is co mpleted, run the engin e at low idling. 8. Press position (a) (man ual reverse rotation ON ) of cooling fan revers e rotation switch 9.
After th e cooling fan rev erse rotation pilot lamp on the machine monito r flashes, check t hat it goes out. T he fan is set to rotate in the n 10. Run th e engine at low i dling for approx. 10 sec onds.