Suzuki DF 90 Service Manual

ENGINE CONTROL SYSTEM 3-25
OVERHEAT CAUTION SYSTEM
CONDITION 1 (Maximum temperature)
Immediate activation of system when :
• Cylinder temperature reaches 121°C.
• Exhaust manifold temperature reaches 114°C.
CONDITION 2 (Temp. rise vs Time)
Immediate activation of system when :
• The average temperature difference during three consecutive 10 seconds measurement periods of the
cylinder temperature sensor at engine speeds of 500 r/min. or higher exceeds the limits as shown below.
• The average temperature difference during three consecutive 10 seconds measurement periods of the
exhaust manifold temperature sensor at engine speeds of 500 r/min. or higher exceeds the limits as shown
below.
Temperature range Temperature difference
86 °C ~ 99 °C
Approx. 2.2 °C
99 °C ~
Approx. 0.6 °C
Temperature range Temperature difference
80 °C ~ 95 °C
Approx. 9.6 °C
95 °C ~
Approx. 1.4 °C
RESET :
Close throttle to reduce engine speed below approx. 3000 r/min.
When cylinder temperature drops below the limits as shown below, the system resets. However, the system
may be activated again unless the cause for overheat (such as insufficient water) is removed.
Caution cause Reset temperature
Condition 1
(Maximum temperature)
Approx. 70 °C
Approx. 65 °C
Condition 2
(Temperature rise vs Time)
Engine speed
Caution lamp
Caution buzzer
Automatically reduced to approx. 3000 r/min. by intermittent fuel injection and ignition
signals if the system is activated at 3000 r/min. or higher.
“TEMP” lamp lights continuously.
“REV- LIMIT” lamp lights continuously during engine speed rev-limiter activation.
Sounds in a series of long (1.5 sec.) beeps.
ACTION :

Suzuki DF 90 Specifications

General

Brand	Suzuki
Model	DF 90
Category	Outboard Motor
Language	English