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15. TROUBLESHOOTING
WARNING SYSTEM COMES ON
SYMPTOM
Overheat warning system comes on:
• Overheat indicator comes on.
• Overheat warning buzzer sounds.
• Engine speed decreases and stops at last.
• Engine speed cannot be increased by opening the
throttle.
• Engine will stop in 20 seconds after engine speed is
limited.
Oil pressure warning system comes on:
• Oil pressure warning indicator comes on.
• Oil pressure warning buzzer sounds.
• Engine speed decreases.
• Engine speed cannot be increased by opening the
throttle.
POSSIBLE CAUSE
Cooling water intake port clogged.
Spark plug has improper heat range.
• Faulty water pump.
• Thermostat clogged.
• Faulty thermostat.
• Cooling water passage clogged.
• Exhaust gas enters cooling system.
Shortage of engine oil
Improper engine oil is used.
REMEDY
Clean the cooling water intake
port.
Replace the spark plug (see page
117
120).
–
Consult with an authorized
Honda outboard motor dealer.
Add engine oil to the specified
level (see page 60).
Change the engine oil (see page
115).
143
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