Spark Plug Service - Honda BF4A Operation And Maintenance Ma

MAINTENANCE

Spark Plug Service

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 to awhile after stopping the
engine.
Check-Adjust interval:
Every 100 operating hours or
6 months.
Replace interval:
Every 200 operating hours or every
year.
Recommended spark plug:
BKR6E-E (NGK)
Use only the recommended spark
plug or equivalent. Spark plug
which have an improper heat range
may cause engine damage.
78
SPARK PLUG WRENCH
SPARK PLUG CAP
1. Remove the engine cover (see page
31).
2. Remove the spark plug cap.
3. Use the wrench and screwdriver to
remove the spark plug.
New plug Plug needing
replacement
4. Inspect the spark plug.
(1) If the electrode is heavily
corroded or carbon-soiled, clean
with a wire brush.
(2) Replace a spark plug if the
central electrode is worn.
The spark plug can wear out in
different ways.
If the sealing washer shows signs
of wear, or if the insulator is
cracked or chipped, replace the
spark plug.