Fuel Sender
The fuel sender is located on top of the fuel tank (Fig.
44).
7. Replace sender as necessary. Reinstall sender into
fuel tank.
Testing
8.
Connect wires to fuel sender. Apply skin--over
grease (see Special Tools in this chapter) to sender ter-
minals.
1.
ignition switch.
Make sure ignition switch is OFF. Remove key from
2.
Remove white (+) wire and black (--) wire from the
fuel sender.
3
CAUTION
Iftestingcircuitwiringandfuelgauge,makesure
wire connections are secure before turning igni-
tion switch ON to prevent an explosion or fire
from sparks.
2
1
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.
Figure 44
1.
2.
Fuel sender
White (+) lead
3.
Black (--) lead
4.
Remove screws and lock washers that secure the
sender to the fuel tank.
5.
any fuel from the sender.
Remove senderandgasketfromthefueltank.Clean
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 (usually 0.5
ohms or less). This internal resistance of the meter and
test leads should be subtracted from the measured val-
ue of the component.
EMPTY POSITION
Figure 45
CAUTION
Makesuresendingunitiscompletely dry(nofuel
on it) before testing. Perform test away from the
tank to prevent an explosion or fire from sparks.
6.
Check resistance of the sender with a multimeter
(Fig. 45).
A. Resistancewiththefloatinthefullpositionshould
be 27.5 to 39.5 ohms.
B. Resistance with the float in the empty position
should be 240 to 260 ohms.
Electrical System
Page 5 -- 36
Groundsmaster 4100--D/4110--D
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