TOHATSU MFS 40A, Owner'S Manual

Page: 33 / 358

PRE-OPERATING PREPARATIONS
31
6
ENOM00041-A
Warning indicators, faults and remedy
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 6200rpm.
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 3000rpm.
Warning indicators
ESG
Description of faults
or notice Remark
Rem-
edy
Sound
A
lamp
B
lamp
C
lamp
Continu-
ous
ON ON ON -
Normal system test
when key on
1 second
Continu-
ous
- - -
High
speed
ESG
Engine speed exceeds
maximum
allowable RPM
Approx.
6,200 r/min
1
Continu-
ous
ON - -
Low
speed
ESG
Low oil pressure 2
Continu-
ous
-
Flash-
ing
-
Low
speed
ESG
Cooling water temp. is high
Over
85°C/185°F
3
-
- -
Flash-
ing
- Battery voltage is low
Engine is stopped
under 9V
4
-
Flash-
ing
Flash-
ing
Flash-
ing
Low
speed
ESG
Malfunction of sensor 5
-
Flash-
ing
Flash-
ing
Flash-
ing
-
Malfunction of electrical
part
5
-
Flash-
ing
- - -
Inform the recommended
timing of engine oil
replacement (every
100hrs.)
“A lamp” ON 1 sec.
and OFF 9 sec. 6
One beep
- - - -
Lowest idling speed of
variable idling system
Two beep
- - - -
Highest idling speed of
variable idling system
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