KYMCO MXU 700i, Owner'S Manual

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8.6. 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
carburetion 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 proper type.
Standard spark plug (NGK): CR7E
Before installing the spark plug, measure the
electrode gap with a feeler gauge and adjust to
specification.
Spark plug gap:
0.7~0.8 mm (0.028~0.031 in)
(A)Spark plug gap
When installing the spark plug, always clean the
gasket surface and use a new gasket. Wipe off any
grime from the threads and tighten to the specified
torque.
Tightening torque: Spark plug:
N-m (1.72 kgf-m, 13 lbf-ft)
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