47
SERVICING YOUR OUTBOARD MOTOR
Spark Plug Service
RECOMMENDED SPARK PLUG:
CR4HSB (NGK)
U14FSR-UB (DENSO)
Incorrect spark plug can cause
engine damage.
1. Remove the engine cover (p. 42).
2. Disconnect the spark plug cap from
the sp
ark plug.
3. Remove the spark plug with a
spark plug
wrench and screwdriver.
4. Inspect the spark plug. Replace it if
the electrode
is worn, or if the
insulator is cracked or chipped.
5. Measure the spark plug electrode
gap with a wire-type fee
ler gauge.
Correct the gap, if necessary, by
carefully bending the side
electrode.
The gap should be:
0.024 – 0.028 in
(0.6 – 0.7 mm)
SPARK PLUG WRENCH
New plug Plug needing
replacement
SIDE ELECTRODE
0.024 – 0.028 in
(0.6 – 0.7 mm)
SEALING
WA SH ER
INSULATOR
31ZW66320.book 47 ページ ２０１３年１０月４日 金曜日 午後３時４８分
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