Suzuki DF350A Owner's Manual page 108

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.
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 main switch is oper-
ated. The error sound (five short buzzer
beeps) is NOT heard:
(If equipped with Keyless Start System)
• Emergency stop switch lock plate is not in
position.
• The main switch has been operated continu-
ously while the communication with the key-
fob is disabled.
• Battery terminal connection is corroded or
lost.
• Battery power is lost.
• Keyless control unit failure.
• Electric wiring connection is loose.
• Main panel failure.
The Keyless Start System does not turn
ON even when the main switch is oper-
ated. The error sound (five short buzzer
beeps) IS heard:
(If equipped with Keyless Start System)
• Key-fob is outside the operating range.
• Key-fob battery is dead.
• Key-fob is in OFF mode.
• The key-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.
106
• Abnormality exists in the electronic control
system of the engine.
The Keyless Start System does not turn
OFF even when the main switch is oper-
ated:
• Electric wiring connection is loose.
• Main panel failure.
FUSE
1. If equipped with Keyless Start System:
Turn the Keyless Start System OFF.
If not equipped with Keyless Start System:
Turn the main switch to the "off" position.
2. Remove the motor cover.
3. Remove the fuse box cover and pull off the
fuse.
Fuse box cover