3-8
Section 3
Fuel Systems
Fuel Gauge and Sending Unit
The fuel tank has a sending unit that sends fuel level
information to the electric fuel level gauge installed on
the control console. The fuel level sender is an
ISSPRO
unit. The sending unit is fully electronic and
compatible with Mercury Marine’s SmartCraft gauge
system. The sending unit generates a fuel level signal
between 240 ohms (empty) and 33 ohms (full).
The fuel gauge powers up when the engine ignition
key switch is turned to the ON position. The fuel
gauge displays the approximate
fuel level in the fuel
tank. The correlation between the gauge reading and
the fuel load is approximately linear from
FULL
to
¼
FULL
. The accuracy of the reading decreases below
¼
FULL
because of the tank’s profile.
The most accurate fuel level reading is obtained when
the boat is at rest and level.
!
CAUTION
The fuel gauge reading is approximate.
Confirm the gauge reading using other
methods. Be conservative when estimating fuel
on-board.
Summary of Contents for 20 Justice Series
Page 18: ...1 10 Section 1 Safety Deck Occupancy Chart ...
Page 20: ...1 12 Section 1 Safety Warning Label Chart 1 2 3 4 5 7 9 6 8 0 B 7 G A C D E F ...
Page 22: ...1 14 Operator Notes ...
Page 58: ...3 4 Section 3 Fuel Systems Fuel System Diagram RACOR 1 0 2 3 4 5 6 7 8 9 A ...
Page 60: ...3 6 Operator Notes ...
Page 106: ...5 10 Operator Notes ...
Page 137: ...6 21 Operator Notes ...
Page 138: ...6 22 Operator Notes ...