PIAGGIO 500 cc Service Manual page 167

For the replacement of components proceed as fol-
lows.
(1) Level indicator:
- Take note of the mounting position and course of the
two connecting wires.
pos 2 = wire connected to the circuit
pos 3 = wire connected to the moving arm
The wires must pass through the hole made between
the filter and the pressure regulator.
- Disconnect and pull out the wires
- Using a screwdriver on the stop tang as shown in the
figure, pull the level indicator out from the support.
- Indicator level control
The control can also be carried out before disman-
tling from the support.
Measure resistance between the two wires of the
indicator level.
Moving the arm with float, check that the resistance is
subjected to progressive variations with the arm move-
ment.
Value limits
empty tank position = 95 - 105 Ω
full tank position = 0 - 9 Ω
- For reassembly follow the dismantling procedure in
the reverse order.
(2) Pressure regulator:
- Remove the spring clip
- Pull out the pressure regulator complete with its fixing
rings.
NOTE: to overcome resistance of the O rings, lever with
a screwdriver using the openings cut into the side
where the clip is inserted.
- For the reassembly, grease the O rings and assemble
in the disassembly reverse order.
Fuel injection
1 2 3 4
5
9
9 - 55