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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 indicator does not come on.
• Oil pressure warning buzzer sounds.
• Engine speed decreases.
• Engine speed cannot be increased by opening the throttle.
148
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 invades cooling system.
Shortage of engine oil
Improper engine oil is used.
REMEDY
Clean the cooling water intake port.
Replace the spark plug
(see page 124
128).
–
Consult with an authorized Honda
outboard motor dealer.
Add engine oil to the specified level
(see page 61).
Change the engine oil
(see page 123).
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