INSTRUMENTATION
A full set of instr uments at the helm of your
boat shows what is taking place within your
engine. Consult your dealer about the nor mal
readings of the gauges upon deliver y of your
boat. This will pro vide you with a reference point
for the life of the engine. K eep in mind some
gauges tend to fluctuate which is not uncom-
mon. But when operating your boat, in vestigate
all gauges that show a greater or less than nor-
mal reading .
NOTE:
Your boat ma y not ha ve all the instr u-
ments discussed in this section. The ranges of
your gauges ma y also var y from the readings
listed or shown in the illustrations.
TACHOMETER
The tachometer displa ys the number of re volu-
tions per minute (RPM) that the engine is
running. The gauge displa ys engine speed in
increments of 200 RPM. The tachometer will
show the RPM’s under all engine operating con-
ditions. Consult with your dealer if you require
additional information. Do not exceed engine
manufacturer’s recommendations.
SPEEDOMETER
The speedometer measures boat speed in
miles per hour (MPH). The accuracy of this
instr ument depends on the placement and
cleanliness of the pickup (pitot) tube. On some
models, the pickup is par t of the engine; on
other models, the pickup is mounted on the
transom. The tube should be tilted up for trailer-
ing or during operation in shallow w ater. Tilt the
tube down while underw ay. If the speedometer
is not wor king, check to see whether the tube
has been damaged or is clogged with sand or
other debris.
WATER PRESSURE GAUGE
The water pressure gauge measures the pres-
sure of the engine cooling w ater. If the gauge
registers a low reading , the water intake may be
clogged or the outboard unit ma y be tilted up
too high. Low pressure ma y lead to engine o ver-
heating.
5-1
Controls and Indicators – 5
RPM
x1000
0
1
2
3
4
5
6
MPH
10
20
30
35
40
45
50
55
60
65
0
20
40
30
50
60
70 80
90
100
km/h
TEMP
°
F/
°
C
240
120
160
200
70
85
100
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