Operation of an overheated engine can result
in engine seizure. If an unusually high tem-
perature reading occurs, shut the engine off
The speedometer is a water pressure sensitive unit.
It has a pick-up (pitot tube) assembly mounted on the
transom and a small plastic hose (speedo tube) that
connects it to the speedometer gauge on the dash.
See Figure E-5. 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
D. Oil Pressure Gauge (4-in-1 Gauge)
The oil pressure gauge indicates the pressure in the
engine lubrication system. A signiﬁcant drop in oil
pressure is a possible indication of an oil pump or
other leakage problem.
If the engine has been equipped with an audible en-
gine 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
Figure E-5: Speedo Sender
Operation of an engine with abnormally low oil
pressure can lead to engine damage and pos-
sible seizure. Have the engine serviced imme-
diately upon a reduced oil pressure indication.
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
When winterizing the boat, the speedometer tubing
must be drained of water. Disconnect the speedome-
ter hose at the pick-up assembly and at the gauge
and blow through the tubing to remove the water.
E. Voltmeter (4-in-1 Gauge)
The voltmeter monitors battery condition and thus
alternator performance. See Section H for additional
information regarding electrical systems.
Speedometers are not precision instruments.
The indications are relative and should never
be used for navigational purposes or similar
F. Fuel Gauge (4-in-1 Gauge)
The fuel gauge displays the level of fuel that is present
in the fuel tank. The fuel gauge will operate when the
ignition switch supplying power to the fuel gauge is in
the RUN position.
Due to the mechanical nature of the fuel sender,
variations in readings during various speeds of
operation may occur. This system is merely a
relative indication of the available fuel supply and not
a calibrated instrument. Refer to Section I-1E - Fuel
Senders for additional information.
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
measuring low operational speeds. You are
responsible for damage caused by the wake
of your boat.
Use only clean fuel of the type and grade
recommended by the engine manufacturer.
The use of incorrect or contaminated fuel
can cause engine malfunction and serious
damage. Refer to Section I - Fuel Systems
for additional information.
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
increase in temperature could be a signal of a blocked
cooling passage or a water pump malfunction.
Engines and Instrumentation - Section E
Owner’s Manual Page 56
|Categories||Four Winns F-Series Manuals, Four Winns Manuals|
|Tags||Four Winns F|
|Document Type||Owner's Manual|
|Product Brand||Boats and Cruisers, Four Winns. For support contact your dealer at http://www.fourwinns.com/locate-dealer.aspx|
|Document File Type|
|Wikipedia's Page||Outboard Marine Corporation|
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