Fuel Sender
The fuel sender is located on top of the fuel tank.
7. Replacesenderasnecessary.Installsenderintofuel
tank.
Testing
8.
grease (see Special Tools in this chapter) to sender ter-
minals.
Connect wires to fuel sender. Apply skin--over
1.
ignition switch.
Make sure ignition switch is OFF. Remove key from
2.
Remove white (+) wire and black (--) wire from the
fuel sender.
CAUTION
3
Iftestingcircuitwiringandfuelgauge,makesure
wire connections are secure before turning igni-
tion switch ON to prevent an explosion or fire
from sparks.
2
3.
To test the circuit wiring and fuel gauge, connect
white and black wires and turn ignition switch to ON.
Fuel gauge needle should point to the right edge of the
green area (full). Turn ignition switch OFF and continue
testingfuelsenderifcircuitwiringandgaugeareaccept-
able.
1
Figure 50
1.
2.
Fuel sender
3.
Black (--) lead
White (+) lead
4.
Remove screws and lock washers that secure the
fuel sender to the fuel tank.
5.
Remove fuel sender and gasket from the fuel tank.
Clean all fuel from the sender.
FULL POSITION
NOTE: Before taking small resistance readings with a
digital multimeter, short meter test leads together. The
meter will display a small resistance value. This internal
resistance of the meter and test leads should be sub-
tracted from the measured value of the component.
EMPTY POSITION
CAUTION
Figure 51
Makesuresendingunitiscompletely dry(nofuel
on it) before testing. Perform test away from the
fuel tank to prevent an explosion or fire from
sparks.
6.
Check resistance of the sender with a multimeter
(Fig. 51):
A. Resistancewiththefloatinthefullpositionshould
be from 27.5 to 39.5 ohms.
B. Resistance with the float in the empty position
should be from 240 to 260 ohms.
Groundsmaster 4000--D/4010--D
Page 5 -- 39
Electrical System
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