Spark plug service, Servicing your outboard motor – HONDA BF20D User Manual
Page 80
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U16FER9 (DENSO)
CR5EH-9 (NGK)
0.031
0.035 in
(0.8
0.9 mm)
78
Spark Plug Service
SERVICING YOUR OUTBOARD MOTOR
SPARK PLUG
WRENCH
SPARK PLUG CAP
SEALING
WASHER
SIDE ELECTRODE
0.031
0.035 in
(0.8
0.9 mm)
Incorrect spark plugs can cause
engine damage.
RECOMMENDED SPARK PLUGS:
Unlatch and remove the engine
cover (p.
Disconnect the spark plug caps
from the spark plugs.
Remove the spark plugs with a
spark plug wrench.
Inspect the spark plugs. Replace
them if the electrodes are worn, or
if the insulators are cracked or
chipped.
Measure the spark plug electrode
gap with a wire-type feeler gauge.
Correct the gap, if necessary, by
carefully bending the side
electrode.
The gap should be:
1.
2.
3.
4.
5.
07/09/19 18:28:25 31ZY0600_079
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