Spark Plugs - Honda Motor BF40D Manual Del Usuario

5. SPARK PLUGS

1 Inspection/Adjustment:
1) Remove the engine cover (P. 4-2).
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2) Remove the spark plug cap and remove the spark plug.
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• Before removing the spark plug, clean any dirt from
around the spark plug base to prevent dirt or foreign
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material from entering the combustion chamber.
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6
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8
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10
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3) Remove the carbon deposits from the electrodes using a
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plug cleaner or wire brush.
Check the spark plug insulator and sealing washer for
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damage.
Replace the spark plug with a new one if it is damaged.
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4) Measure the plug gap with a wire-type plug gauge.
16 If the measurement is out of the specification, adjust the
gap by bending the side electrode.
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Plug gap
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Recommended spark
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plug
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5) With the spark plug sealing washer attached, thread each
spark plug in by hand to seat the sealing washer and
prevent cross-threading.
Then, tighten the spark plugs to the specified torque.
TORQUE: 18 N . m (1.8 kgf . m, 13 lbf . ft)
6) Install the spark plug cap on the spark plug.
7) Install the engine cover (P. 4-2).
3-8
[1]
SIDE ELECTRODE
0.6 - 0.7 mm
(0.02 - 0.03 in)
DR7EB (NGK)
X22ESR-UB (DENSO)
350
[3]
SEALING
WASHER
[4]
WIRE BRUSH
[1]
SPARK PLUG
CAP
[2]
SPARK PLUG
WRENCH
(Commercially
available)
0.6 - 0.7 mm
(0.02 - 0.03 in)
[2]
INSULATOR