U14FSR-UB (DENSO)
CR4HSB (NGK)
0.024 0.028 in
(0.6 0.7 mm)
47Spark Plug Service
SERVICING YOUR OUTBOARD MOTOR
SPARKPLUG W RENCH
0.024 0.028 in
(0.6 0.7mm)
SIDEELECTRODE
Newplug
INSULATOR
SEALING
WASHER
Plugneeding
replacement
Incorrect spark plug can cause
engined amage.
RECOMMENDED SPARK PLUG:
The gap shouldbe:
Measure the spark plug electrode
gap with a wire-typef eelergauge.
Correct the gap, if necessary, by
carefully bending the side
electrode.
Removethe spark plug with a
sparkplug wrench and screwdriver
suppliedin the tool kit.
Disconnectthe spark plug cap
from the spark plug.
Removethe engine cover (p. ).
Inspectthe spark plug. Replace it
if the electrode is worn, or if the
insulator is cracked or chipped.
1.
2.
3.
4. 5.
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