TOHATSU MFS 15E Series, Owner'S Manual

Page: 33 / 356

PRE-OPERATING PREPARATIONS
31
6
ENOM00041-B
Warning indicators, faults and remedy
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 is reduced 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 6300 min
-1
(rpm).
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 2800 min
-1
(rpm).
Warning indicators
Description of faults Remedy
Sound Lamp (LED)
Low
speed
ESG
High
speed
ESG
One beep On for 5 sec. Normal system test when start up
Continuous ON ON
Engine speed exceeds maximum
allowable RPM
1
Continuous
*2
ON
*2
ON
*2
Low oil pressure
*1
2
Continuous ON ON Water over temperature
3
Intermittent
short beep
*2
Blinking
*2
ON
*2
Water temp or MAP sensor out of
range
4
Remedy
1.
Reduce the throttle to less than half
opening, and move to safe place
quickly, and stop the engine.
Check the propeller for bent or dam-
aged blades.
Consult an authorized dealer if engine
shows the same result even after
replacing propeller with new one.
2. Move to safe place quickly, and stop
the engine.
Check the engine oil level, and add
engine oil if necessary.
Consult your dealer if the engine oil
level is too low or too high.
3.
Move to safe place quickly, and check
the discharge of cooling water from the
water check port at idle speed and
stop engine.
Remove any foreign matter on the gear
case and propeller if necessary. Con-
sult an authorized dealer if no dis-
charge of cooling water.
4. Consult an authorized dealer.
ENOW00025-B
z
Low speed ESG ON: Engine speed will
be limited under 2800 min
-1
(rpm), how-
ever you should not continue to run
engine.
z
High speed ESG ON: Engine speed will
be li m i t ed to 6300 m i n
- 1
(rpm) and
engine will run rough until throttle is
reduced.
CAUTION
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