Optional Parts: Iridium Spark Plug - Honda BF250A Owner's Manual

Spark Plugs
<Optional Parts: Iridium Spark
Plug>
To ensure proper engine operation,
the spark plug must be properly
gapped and free of deposits.
The spark plug becomes very hot
during operation and will remain
hot for a while after stopping the
engine. Allow the engine to cool
before servicing the spark plug.
Check/Clean interval:
Every 200 operating hours or every
year.
Replace interval:
Every 400 hours or 2 years
Recommended spark plug:
IZFR6K-11E (NGK)
Use only the recommended spark
plugs or equivalent. Spark plugs
which have an improper heat range
may cause engine damage.
Installation and removal procedure of
the Iridium spark plugs are the same
as the standard spark plugs.
These spark plugs have an iridium
coated center electrode. Be sure to
observe the following when servicing
iridium spark plugs.
• Do not clean the spark plugs. If an
electrode is contaminated with
accumulated objects or dirt, replace
the spark plug with a new one.
The cleaning of the iridium spark
plugs consult with an authorized
Honda outboard motor dealer,
unless the owner has the proper
tools and is mechanically
proficient.
MAINTENANCE
• Use only a ''wire-type feeler
gauge'' to check the spark plug gap
if necessary. To prevent damaging
the iridium coating of the center
electrode, never use a ''leaf-type
feeler gauge.''
The gaps should be 1.0 – 1.3 mm
(0.039 – 0.051 in).
• Do not adjust the spark plug gap.
If the gap is out of specification,
replace the spark plug with a new
one.
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