KEEWAY RKV125 Instruction And Maintenance Manual page 38

Symptom: Headlamp is dim.
AC power supplied lighting system
Separate conductors of lead wire bundle of magnet from
cables of the whole vehicle. Measure and check with an
ohmmeter if resistance between lead wire section output
from magneto lighting coil is smaller than the standard.
Yes
Lighting coil is Start engine and limit its RPM. Separate
shorted. conductors of rectification regulator from the
cables of the whole vehicle. Check brightness of
light.
Headlamp light recovers
after separation.
Stable voltage
rectification regulator is
too low.
Check
problem.
Diagnosis procedures
Headlamp is dim
No
Headlamp light is still
dim after separation.
of
Check if charging coil of
magneto and wirings in the
charging system are shorted.
Yes
and solve
DC power supplied lighting system
Turn on ignition switch; press horn button
or slide turn signal lamp switch.
Electric
loudly. Turn signal lamp
is bright.
No
Disassemble headlamp assembly and check if
the bulb glass black or yellowish-green.
Electric horn sounds hoarse.
Turn signal lamp is dim.
Battery is low or the connection
position between ignition switch
and battery is badly contacted.
horn sounds