VESPA ET4 50, Workshop Manual, Page: 48 / 185

If faulty or failed operation persists, conduct the
following checks on the generator and on the sta-
tor components:
After a visual inspection of the electrical connec-
tions, it is possible to perform measurements on
the stator winding and pick-up (see table), using
the specific multimeter.
If, during the checks on the charge coil and the
pick-up, anomalies are found, replace the stator
and other faulty parts.
Disconnect the connector on the flywheel housing
and measure the resistance between each of the
two contacts and the earth.
Specific tooling
020331Y Digital multimeter
PICK-UP CHECK
Specification Desc./Quantity
1 1) Brown cable and earth ~ 170
Ω
STATOR WINDING CHECK
Specification Desc./Quantity
1 1) Black cable and earth ~ 1
Ω
Ignition circuit
All the control operations of the system that require
the disconnection of cables (checks of the con-
nections and the devices making up the ignition
circuit) must be done with the engine off: if this is
not done, the controls might be irreparably dam-
aged.
Electrical system
ET4 50
ELE SYS - 48