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U14FSR-UB (DENSO)
CR4HSB (NGK)
0.024
0.028 in
(0.6
0.7 mm)
47
Spark Plug Service
SERVICING YOUR OUTBOARD MOTOR
SPARK PLUG WRENCH
0.024
0.028 in
(0.6
0.7 mm)
SIDE ELECTRODE
New plug
INSULATOR
SEALING
WASHER
Plug needing
replacement
Incorrect spark plug can cause
engine damage.
RECOMMENDED SPARK PLUG:
The gap should be:
Measure the spark plug electrode
gap with a wire-type feeler gauge.
Correct the gap, if necessary, by
carefully bending the side
electrode.
Remove the spark plug with a
spark plug wrench and screwdriver
supplied in the tool kit.
Disconnect the spark plug cap
from the spark plug.
Remove the engine cover (p.
Inspect the spark plug. Replace it
if the electrode is worn, or if the
insulator is cracked or chipped.
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5.
11/09/04 17:00:57 31ZW6630_048