7. Charge Warning Light This indicator light will turn "ON" when the engine starter switch is turned "ON," and should go "OFF" after the engine starts. If it does not turn "OFF," shut the engine down immediately and determine the cause of the problem. HAOA610L Figure 42 8. Engine Oil Pressure Warning Light This indicator light will turn "ON" when the engine starter switch is turned "ON," and should go "OFF" after the engine starts. For example, if the engine oil pressure becomes too low, the light will turn "ON" and a warning buzzer will sound. If this happens, shut the engine down immediately and determine the cause of the problem.
If you continue to work when this light is "ON," it will result in serious engine damage. HAOA620L Figure 43 CAUTION If you continue to work when this light is "ON," it will result in serious engine damage. 9. Engine Coolant Temperature Warning Light If engine coolant overheats, this light will turn "ON," an alarm will sound, and the engine speed will be automatically reduced, until coolant temperature drops. Do not turn engine "OFF" because this will cause coolant temperature to rise and may cause engine to siege because of heat surge. NOTE: Check the engine coolant temperature gauge.
If the gauge pointer moves into the red zone, the engine coolant temperature warning light will turn "ON," a warning buzzer will sound, and the engine speed will be automatically reduced. Allow the engine to run at low idle speed until temperature gauge registers in the blue zone again. When the blue zone is reached, allow the engine to idle for an additional three - five minutes before shutting down the engine. If not allowed to idle, heat surge may develop which will damage the engine. Allowing the engine to idle will dissipate heat. Check the coolant level, look for a loose fan belt, inspect for debris around radiator, and so on.
HAOD350L Figure 44 When the temperature reaches the normal range, the engine speed will automatically recover. OP001760 2-23 Operating Controls