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Servicing Your Honda
142
Spark Plugs
10.
Inspect the electrodes and center porcelain for deposits,
corrosion, or carbon fouling. If the corrosion or deposits are
heavy, replace the plug. Clean a carbon or wet-fouled plug with
a plug cleaner, if available, or a wire brush. Inspect the spark plug
electrodes for wear. The center electrode (12) should have a flat
tip and sharp edges, and the side electrode (13) should not be
eroded. If the electrodes and insulator tip appear unusually
fouled or burned, we suggest that you contact your Honda
dealer.
11.
Discard the spark plug if there is apparent wear or if the insulator
is cracked or chipped.
12.
Using a wire-type feeler gauge, check the spark plug gap (14). If
adjustment is necessary, bend the side electrode carefully.
The gap should be:
0.031 to 0.035 in (0.80 to 0.90 mm)
(13)
(12) center electrode
(14) spark plug gap
(13) side electrode
(12)
(14)
0.031 to 0.035 in
(0.80 to 0.90 mm)
19 TRX680FA-31HN8760.book Page 142 Friday, June 1, 2018 9:32 AM
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