Toro Z Master Z597 Service Manual page 144

2. Set the multimeter to read continuity. Place the meter
probes on each wire. With the float at the bottom
of the sensor you should have NO Continuity (Fig.
385).
Float in "down" position
Fig 385
3. With the meter probes still on the wires of the sensor,
raise the float upwards, you should have continuity
(Fig. 386).
Float in raised position
Fig 386
Z Master 597 Diesel Series Service Manual
Meter reads "OPEN"
fuel filter sensor down
Meter reads "CLOSED"
(continuity)
fuel filter sensor raised
ELECTRICAL
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