jcb JS300 Service Manual page 543

Testing
The tables list the expected fuel level sensor outputs for
different fuel tank contents.
Fuel Fuel Remaining (%)
Sensor
Resistance
(Ohms)
107.5 0 ('no fuel' alarm active) gauge needle
points to red segment
102.5 5 ('no fuel' alarm active) gauge needle
points to red segment
97.5 10 ('low fuel' alarm active) gauge needle
points to red segment
92.5 15
87.5 20
82.5 25
77.5 30
72.5 35
67.5 40
62.5 45
57.5 50
52.5 55
47.5 60
52.5 65
37.5 70
32.5 75
27.5 80
22.5 85
17.5 90
12.5 95
12 100
C-118 9813/5100-1
Section C - Electrics
Engine and Power Control
Fuel Level Sensor
C-118