Suzuki DF115BG 2021 Owner's Manual page 91

Engine idles unstably or stalls:
• Spark plug is fouled.
• Fuel hose is kinked or pinched.
• Fuel hose is not properly connected to
engine.
• Fuel is deteriorated.
• Fuel filter is clogged.
• Fuel pump is failed.
• Ignition system is fouled.
• Incorrect engine oil is used.
• Thermostat is failed.
• Electric wiring connection is loose.
Caution system is activated (Caution
buzzer sounds. Caution LEDs light.):
• Cooling water passage is clogged.
• Thermostat is failed.
• Water pump is failed.
• Oil change reminder system is activated.
• Engine oil level is not enough or deteriorated.
• Engine oil filter is clogged.
• Oil pump is failed.
• Propeller is damaged.
• Battery power is lost.
• Engine control sensor is failed.
• Electric wiring connection is loose.
Shift operation will not be activated:
• Electronic shift control system is failed.
Propeller is not rotated:
• Propeller bush is worn or damaged.
• Drive shaft is damaged.
• Propeller shaft is damaged.
Engine speed will not increase:
• Propeller is damaged.
• Propeller is not clean.
• Propeller is not properly selected.
• Outboard motor is not correctly installed.
• Trim angle is not properly adjusted.
• Spark plug is fouled or incorrectly selected.
• Fuel hose is kinked or pinched.
• Fuel filter is clogged.
• Fuel is deteriorated.
• Fuel pump is failed.
• Ignition system is failed.
• Electronic throttle system is failed.
• Heavy cargo is on the boat.
• Water has entered into the boat.
• Bottom of boat is not clean or damaged.
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Engine vibrates excessively:
• Propeller is damaged.
• Engine mounting bolts or clamp screws are
loose.
The Keyless Start System does not turn
ON even when the engine switch is oper-
ated. The error sound (three short buzzer
beeps) is NOT heard:
(If equipped with Keyless Start System)
• Emergency stop switch lock plate is not in
position.
• Battery terminal connection is corroded or
lost.
• Battery power is lost.
• Keyless control unit failure.
• Electric wiring connection is loose.
• Engine switch panel failure.
The Keyless Start System does not turn
ON even when the engine switch is oper-
ated. The error sound (three short buzzer
beeps) IS heard:
(If equipped with Keyless Start System)
• Keyless fob is outside the operating range.
• Keyless fob battery is dead.
• Keyless fob is in OFF mode.
• The keyless fob is not authenticated.
• Communication failure due to strong radio
wave or noise.
• Electric wiring connection failure between the
keyless control unit and outboard motor.
• Authentication error between the keyless
control unit and outboard motor.
• Abnormality exists in the electronic control
system of the engine.
The Keyless Start System does not turn
OFF even when the engine switch is oper-
ated:
• Electric wiring connection is loose.
• Engine switch panel failure.