Spark Plugs - Honda VFR800 Owner's Manual

SPARK PLUGS

Refer to the Safety Precautions on page
Recommended plugs:
Standard:
IMR9B 9H (NGK) −
VNH27Z (DENSO)
For cold climate: (Below 5°C, 41°F)
IMR8B 9H (NGK) −
VNH24Z (DENSO)
Never use a spark plug with an improper
heat range. Severe engine damage could
result.
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Classic Cycles Technical Resources
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This motorcycle uses the spark plugs that
have an iridium coated center electrode. Be
sure to observe the following when
servicing the spark plugs.
Do not clean the spark plug. If the
e l e c t r o d e i s c o n t a m i n a t e d w i t h
accumulated objects or dirt, replace the
spark plug with a new one.
To check the spark plug gap, use only a
''wire-type feeler gauge.'' To prevent
damaging the iridium coating of the
center electrode, never use a ''leaf-type
feeler gauge.''
Do not adjust the spark plug gap. If the
gap is out of specification, replace the
spark plug with a new one.