Sym MB10A7-A series Service Manual page 206

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Fuel Unit
Fuel unit inspection
Remove the fuel unit (3 screws).
Check the washer for deformation or damage;
replace it with new one if necessary.
Measure the fuel unit electrical resistance.
Float arm position
Lower (empty)
Upper (full)
Connect the wiring to the fuel unit and the
ohmmeter as shown.
Connect the fuel unit coupler to the wire
harness.
Turn on the main switch.
Move the float arm to verify the proper
position the fuel gauge needle indicates.
Float arm position
Upper (full)
Lower (empty)
Caution
Make sure the battery voltage is sufficient
before proceeding inspection.
Caution
Make sure there is not too much fuel in
the fuel tank before proceeding operation.
To this chapter contents
Resistance
745 Ω±10%
80 Ω±10%
LED display
F (full)
E (empty)
12. Electrical System
3 screws
Full
Empty
12-25