Speedometer; Temperature Gauge (4-In-1 Gauge); Oil Pressure Gauge (4-In-1 Gauge) - Four winns FREEDOM Owner's Manual

Figure E5: Tachometer - Rear View
B. Speedometer
The speedometer is a water pressure sensitive unit. It
has a pick-up (pitot tube) assembly mounted on the tran-
som and a small plastic hose (speedo tube) that con-
nects it to the speedometer gauge on the dash. See
Figure E6. The pitot tube extends below the hull. Water
strikes the tube inlet and creates positive pressure. The
faster the boat speed, the greater the pressure, and the
higher the speed indication on the speedometer.
Figure E6: Speedo Sender
Freedom™/Horizon™ Owner's Manual
If the pick-up becomes clogged, the speedometer will
not register. Clean the opening with a piece of wire or
disconnect the tubing and blow out the pick-up with com-
pressed air.
When winterizing the boat, the speedometer tubing must
be drained of water. Disconnect the speedometer hose
at the pick-up assembly and at the gauge and blow
through the tubing to remove the water.
NOTICE
Speedometers are not precision instruments.
The indications are relative and should never be
used for navigational purposes or similar critical
situations.
DO NOT rely on the speedometer when trying
to achieve a "NO WAKE" condition in a harbor
or other enclosed waterway. ALWAYS reduce
throttle! Speedometers are not effective at mea-
suring low operational speeds. You are respon-
sible for damage caused by the wake of your
boat.
C. Temperature Gauge (4-in-1 Gauge)
The temperature gauge included in the 4-in-1 gauges
monitor the cooling system of the engine. A sudden in-
crease in the temperature could be a signal of a blocked
cooling passage or a water pump malfunction.
NOTICE
Operation of an overheated engine can result in
engine seizure. If an unusually high tempera-
ture reading occurs, shut the engine off immedi-
ately.
D. Oil Pressure Gauge (4-in-1 Gauge)
The oil pressure gauge indicates the pressure in the en-
gine lubrication system. A significant drop in oil pres-
sure is a possible indication of an oil pump or other leak-
age problem.
If the engine has been equipped with an audible engine
alarm, the alarm should sound if the oil pressure drops
below the normal operating range of the engine. Please
see your engine owner's manual for specific engine in-
formation.
Section E
Page 6