VALUES ARE STATED AT AMBIENT TEMPERATURE. A
CHECK WITH THE STATOR AT OPERATING TEMPERA-
TURE MAY RESULT IN VALUES HIGHER THAN THOSE
STATED.
Voltage regulator check
With a perfectly charged battery and lights off,
measure voltage at the battery poles with a high
running engine.
The voltage should not exceed 15.2 Volt.
In case higher voltages are detected, replace the
regulator.
In case of voltage values lower than 14 Volt, check
the stator and the corresponding cable harness.
Recharge system voltage check
Connect an ammeter induction clamp to the volt-
age regulator positive terminal, measure the bat-
tery voltage and turning on the vehicles lights with
engine off, wait for the voltage to set at about 12
V. Start the engine and measure the current gen-
erated by the system with lights on and a high
running engine.
In case the generated current value is lower than
10A, repeat the test using a new regulator and/
stator alternatively.
The recharge system is provided with a three phase generator with permanent magneto flywheel. The
generator is directly connected to the voltage regulator. In turn, the latter is directly connected to earth
and to the battery positive passing through the 15A safety fuse. This system therefore requires no
connection to the key switch. The three phase generator allows a considerable recharge power and at
lower rpm it enables a good combination of delivered power and idle steadiness. For this reason, idle
speed must be adjusted according to the prescriptions.
MSS X9 Evolution 250 Electrical system
ELE SYS - 67
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