KYMCO MX’er 125 - Page 29

1. GENERAL INFORMATION
1
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27
MX’er SYSTEM
Undercharging
Dead battery
Faulty battery
Faulty A.C. generator coil
Broken yellow wire
Shorted pink and yellow wires
Broken red wire
Faulty regulator/rectifier
Poorly connected coupler
Faulty A.C. generator
Overcharging
Broken green wire
Poorly connected coupler
Faulty regulator/rectifier
NO SPARK AT SPARK PLUG
Start engine and test
limit voltage of battery
terminals
Inspection/Adjustment
Connect battery (+)
wire to
regulator/rectifier
coupler red wire and
battery (
-
) wire to
engine ground and tes
t
Symptom
Inspection/Adjustment
Probable Cause
Inspection/Adjustment
Symptom
Symptom
Probable Cause
Probable Cause
Normal voltage
Battery has voltage
with ignition switch
“ON”
Normal
Voltage does not
increase
Battery has no
voltage with ignition
switch
“ON”
Resistance too high
Normal voltage
No voltage
Measure resistance
between AC generator
coil terminals
Normal Abnormal
Check
regulator/rectifier
coupler for loose
connection
Normal
Abnormal
Connect battery (+)
wire to
regulator/rectifier
coupler green wire and
battery (
-
) wire to
engine ground and tes
t
Check
regulator/rectifier
coupler for loose
connection