Honda BF8D Manual page 117

11/09/05 18:15:35 32ZY0620_117
New plug Plug needing
replacement
4. Inspect the spark plugs.
(1) If the electrodes are 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
insulators are cracked or
chipped, replace the spark plugs.
SIDE ELECTRODE
0.8 − 0.9 mm
(0.031 − 0.035 in)
SEALING WASHER
INSULATOR
5. Measure the plug gaps with a
feeler gauge.
−
The gaps should be 0.8 0.9 mm
(0.031 0.035 in). Correct as −
necessary by carefully bending the
side electrode.
MAINTENANCE
6. Check that the spark plug washers
are in good condition, and thread
the plugs in by hand to prevent
cross threading.
7. After the spark plugs are seated,
tighten with a spark plug wrench
to compress the washers.
117