Fuel Sender
The fuel sender is located on top of the fuel tank.
Testing
1.
Remove blue/red wire and black ground wire from
the fuel sender.
FULL POSITION
CAUTION
When testing circuit wiring and fuel gauge, make
sure wire connections are secure before turning
ignition switch RUN to prevent an explosion or
fire from sparks.
105
O
2.
To test the circuit wiring and Info Center Display fuel
gauge, connect blue/red and black wires and turn igni-
tion switch to RUN.Fuel gaugeshould indicate afullfuel
tank. Turn ignition switch OFF and continue testing fuel
sender if circuit wiring and gauge are acceptable.
EMPTY POSITION
3.
Remove screws and lock washers that secure the
sender to the fuel tank.
Figure 105
4.
Remove senderandgasketfromthefueltank.Clean
any fuel from the sender.
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.
CAUTION
Makesuresendingunitiscompletely dry(nofuel
on it) before testing. Perform test away from the
tank to prevent an explosion or fire from sparks.
5.
Check resistance of the sender with a multimeter
(Fig. 105).
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.
6.
Replace sender as necessary. Reinstall sender into
fuel tank.
7.
grease (Toro Part No. 505--165) to sender terminals.
Reconnect wires to fuel sender. Apply skin--over
Electrical System
Page 5 -- 58
Groundsmaster 5900/5910
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