Spark Plug Inspection - KYMCO MXU 50 Owner's Manual

CAUTION:
Be sure no foreign material enters the
crankcase.
F. Start the engine and warm up for a few
minutes. While warming up, check for oil
leakage. If oil leakage is found, stop the
engine immediately and check for the
cause.

SPARK PLUG INSPECTION

The spark plug is an important engine
component and is easy to inspect. The
condition of the spark plug can indicate the
condition of the engine.
For example, a very white center electrode
porcelain color could indicate an intake air
leak or carburet problem for that cylinder. Do
not attempt to diagnose such problems
yourself.
Instead, take the machine to a KYMCO
dealer.
You should periodically remove and inspect
the spark plug because heat and deposits will
cause the spark plug to slowly break down
and erode.
If electrode erosion becomes excessive, you
should replace the spark plug with one of the
Standard spark plug: NGK BR8HAS
91