Troubleshooting - Yamaha XC125 Service Manual

['_=[ I AUTO CHOKE SYSTEM
TROUBLESHOOTING
After starting the engine, the AUTO CHOKE system provides a leaner fuel-air mixture according to
the increased engine ternparature. Thus, if the cold engine is hard to start, the carburetor unit is
defective and an overhaul of the unit is necessary. An electrical trouble in the AUTO CHOKE system
causes the engine to be a trouble or hard to start when the engine is warmed up. Check the engine
as follows:
i The engine shows a trouble after |
i
warmed up.
I
Connect battery to the choke unit NO
=--=------_ I Replace the ch°ke unit assembly" i
directly. The cam in the unit must
be activated.
directly.C°nnect Check for voltage of the i- FI Replace the chOke relay'_ l_
I
batteries to the relay unit I NO
relay.
NO
i Check the stator coil for resistance,
i_i
Replace the stator coil assembly, i
check the carburetor main unit.
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