Mercury 40 Operator's Manual page 35

Function
Start Up
Engine Fault
Engine Fault
Engine Fault
Cooling System Problem
Low Oil Pressure
FEATURES & CONTROLS
Warning Horn
One Beep
Six Beeps at Start Up or
While Driving
Three Beeps every 4
Minutes
Intermittent Beep
Continuous
Continuous
Sound
29
Description
Normal System Test
The horn sounds when there
may be a problem with one
of the engine functions.
Have your dealer check the
engine soon.
Engine problem has
occurred. Engine will run
rough and/or stall. Engine
may not start. Advancing the
remote control neutral fast
idle feature or advancing the
tiller handle throttle grip half
way may assist starting.
Have your dealer check the
engine
Engine problem has
occurred. Engine will not
run. Have your dealer check
the engine
Engine Guardian System is
activated. Power limit will
vary with level of overheat.
Shift outboard into neutral
and check for a steady
stream of water coming out
of the water pump indicator
hole. If no water is coming
out of the water pump
indicator hole or flow is
intermittent, stop engine and
check water intake holes for
obstruction.
Engine Guardian System is
activated. Power will be
limited to 2000 RPM. First,
stop the engine and check
the oil level. Add oil if
necessary.