TOHATSU MFS 25C Owner's Manual page 32

ENOM00041-B
Warning indicators, faults and remedy
Warning indicators
Sound Lamp (LED)
One beep On for 5 sec.
Continuous
*2
Continuous ON
Continuous
Intermittent
Blinking
*2
short beep
Remarks
*1: In this case, oil pressure switch is "ON".
*2: It is necessary to stop the engine, if you want to stop the working indicators and re-set the warning system.
High speed ESG (Electronic Safety Governor)
High speed ESG is a device to prevent over revolution of the engine. If the load to the engine becomes light for some
reason, it runs at a higher speed than the usual. In such the case, the buzzer sounds and the ESG is activated not to
ignite the spark plug, therefore, the engine speed varies and be controlled under 6300rpm.
Low speed ESG
Low speed ESG is a device to prevent the engine from getting damage. If the engine has problems regarding
cooling water, oil pressure, and sensors, the low speed ESG is activated not to ignite the spark plug, and disable
fueling therefore, the engine speed varies and be controlled under 2800rpm.
Low
speed
ESG
ON
*2 *2
ON
ON ON
*2 *2
ON
PRE-OPERATING PREPARATIONS
High
Description of faults
speed
ESG
Normal system test when start up
Engine speed exceeds maximum
ON
allowable RPM
Low oil pressure
Water over temperature
Water temp or MAP sensor out of
range
33
Remedy
1
2
*1
3
4
6