Toro 3000D manual Fuel Sender, Fuel Gauge, Electrical System 6 14 Rev. a

Fuel Sender

The sender is located on top of the fuel tank inside the center shroud area.

1.Remove blue wire and black ground wire from the sender.

2.Remove remaining screws and lock washers from the sender and fuel tank.

3.Remove sender and gasket from the fuel tank. Clean any fuel from the sender.

Note: Before taking small resistance readings with a digital multimeter, short test leads together. The meter will display a small resistance value. This internal resis­ tance of the meter and test leads should be subtract from the measured value of the component.

4.Check resistance of the sender with a multimeter. Resistance with the float in the full position should be 27.5 to 39.5 ohms. Resistance with the float in the empty position should be 240 to 260 ohms.

GROUND WIRE

BLUE WIRE

Figure 15

FULL POSITION

EMPTY POSITION

Figure 16

Fuel Gauge

The fuel gauge can be tested using a new gauge as a substitute or by the use of a DC voltage source and a variable resistance box.

Note: Before taking small resistance readings with a digital multimeter, short test leads together. The meter will display a small resistance value. This internal resis­ tance of the meter and test leads should be subtract from the measured value of the component.

1.Connect the fuel gauge to the variable resistance and DC voltage source (Fig. 17).

2.Adjust resistance until the gauge needle points to following test points on the gauge (Fig. 17):

A.The left edge of the red area (empty); the resis­ tance setting should be from 235 to 245 ohms.

B.The middle of the green area (half); the resis­ tance setting should be from 98 to 108 ohms.

C.The right edge of the green area (full); the resis­ tance setting should be from 30.5 to 40.0 ohms.

3.Disconnect the voltage source, gauge, and variable resistance.

EMPTY HALF FULL

G

S I

VARIABLE

RESISTANCE

14 VDC

– + Figure 17

Electrical System Page 6 – 14 Rev. A Groundsmaster 3000/3000–D