Suzuki DF150AP Owner's Manual page 63

If not equipped with Keyless Start System:
Turn the main switch to the "ON" position.
NOTE:
If equipped with Keyless Start System:
The communication range is a distance of 1 m
(39.4 in.) between the key-fob and the keyless
control unit.
If the Keyless Start System fails to turn ON, the
buzzer emits one (1) long sound and five (5)
short sounds.
In this case, repeat the procedure again.
3. Push the start & stop switch to start the
engine.
NOTE:
By pressing the Start & Stop switch once, the
starter motor turns for 3 seconds continuously
until the engine starts.
NOTICE
If you hold in the START & STOP switch
to start the engine, the starter system can
be damaged.
Push the START & STOP switch and
release it to start the engine. The engine
will crank continuously for 3 seconds or
until the engine starts.
NOTICE
If "Low Oil Pressure" is displayed on the
screen of the meter while operating the
outboard, the oil level may be low enough
to damage the engine.
Stop the engine and check the oil level.
NOTE:
The continuous operating time of the starter
motor is set at five seconds.
When this time is exceeded, the starter motor
will automatically stop.
If the motor stops, wait about ten seconds for
the motor to cool down and try again.
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