15. TROUBLESHOOTING. TOHATSU BFT 115A, BFT 150A
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36ZX1T120_EN.book Page 114 Tuesday, November 28, 2017 4:48 PM
15. TROUBLESHOOTING
WARNING SYSTEM COMES ON
SYMPTOM POSSIBLE CAUSE
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.
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.
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.
Shortage of engine oil
Improper engine oil is used.
REMEDY
Clean the cooling water intake port.
Replace the spark plug
(see page 89 – 93).
Consult with an authorized
TOHATSU outboard motor dealer.
Add engine oil to the specified level
(see page 41).
Change the engine oil
(see page 87).
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36ZX1T120_EN.book Page 115 Tuesday, November 28, 2017 4:48 PM
SYMPTOM
Water separator warning system comes on:
• Water separator warning buzzer sounds.
PGM-FI warning system comes on:
• PGM-FI indicator comes on.
• PGM-FI warning buzzer sounds intermittently.
ACG warning system comes on:
• ACG indicator comes on.
• ACG warning buzzer sounds intermittently.
POSSIBLE CAUSE
Water is accumulated in the water separator.
PGM-FI warning system is faulty.
Battery voltage is too high or low.
Faulty ACG.
TROUBLESHOOTING
REMEDY
Clean the water separator (see page
99).
Check the fuel tank and fuel line for water accumulation. If the buzzer sounds again, consult with an authorized TOHATSU outboard motor dealer.
Consult with an authorized
TOHATSU outboard motor dealer.
Check the battery
(see page 47, 102).
Consult with an authorized
TOHATSU outboard motor dealer.
115
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