Operation; Warning Indication - TOHATSU MFS25 Service Manual

3.Operation

1) Warning Indication

When an abnormality occurs on the engine, warning buzzer
sounds and warning lamp is lit or blinks.
Take actions described below if abnormal state has
occurred.
1. When engine started, warning lamp is lit for 5 seconds and
warning buzzer operates for two seconds (generating
intermittent sound) indicating that operation warning system
is operating normally.
2. Overrevolution Prevention System (High Speed ESG)
If engine load is reduced for some reason, the revolution
speed may increase abnormally. In such case, warning
buzzer operates (generating continuous sound), warning
lamp is lit, and at the same time, high speed ESG operates
to reduce the speed to 6,300r/min.
Sensor Detection Level
Overrevolution
3. Overheat Warning
When engine cooling water temperature exceeds setting
value during operation, warning buzzer operates (generating
continuous sound), warning lamp is lit, and at the same time,
low speed ESG operates to reduce the speed to 2,800r/min
or less.
Sensor Detection Level
Overheat
• Run immediately to safe place, and set throttle
grip or control lever to slow. Set shift lever or
control lever to neutral (N), check if cooling
water check port discharges water, and then,
stop engine. Remove plastic sheet or other
matters that clogs water intake port, if any.
• The revolution control is cancelled when the
engine temperature returns to normal state,
and in throttle range of 2,800 r/min or over, the
engine speed increases gradually.
• This warning is effective only for overheating,
and not effective for combustion or lubrication.
25/30 2006
Speed Controlled to
Approximately 6,300 r/min
Speed Controlled to
2,800 r/min
a Lamp is lit.
a Lamp is lit.
a
a
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