. OPERATION DETAILED CONTROLS AND GAUGES Engine Oil Level Monitor Maintenance Interval Monitor 3 - 9 Monit or (2) war ns the operator that the oil leve l in the engine oi l pan has d ropped. If oil l evel in th check the oil le vel, and add oi This monitor ( 3) lights up red perator time h as pass ed from the time of the previou s maintenance. This monitor sc reen goes out a fter 30 second s and s witches t o the norm Fo al screen r details o e "Maintenance Switch (P AGE 3-23)" in the Detailed controls d gauges If it is desired to change setting s for the maintenance interval, have your Komatsu distributor chan ge the setting