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SPARK PLUG
WRENCH
7. Remove the spark plugs with a
spark plug wrench and 19 mm eye
wrench.
New plug
Plug needing
replacement
8. Inspect the spark plugs. Replace
them if the electrodes are worn, or
if the insulators are cracked or
chipped.
19 mm EYE
WRENCH
9. 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:
0.039 – 0.043 in (1.0 – 1.1 mm)
10. Install the spark plugs carefully,
by hand, to avoid cross-threading.
SERVICING YOUR OUTBOARD MOTOR
SIDE ELECTRODE
0.039 – 0.043 in
(1.0 – 1.1 mm)
SEALING
WASHER
INSULATOR
11. After each spark plug seats,
tighten with the spark plug
wrench supplied in the tool kit to
compress the sealing washer.
If reinstalling used spark plugs,
tighten 1/8 – 1/4 turn after the
spark plugs seat.
If installing new spark plugs,
tighten 1/2 turn after the spark
plugs seat.
TIGHTENING TORQUE:
13 lbf·ft (18 N·m , 1.8 kgf·m)
Loose spark plugs can overheat
and damage the engine.
Overtightening the spark plugs
can damage the threads in the
cylinder head.
12. Push the wire connector onto the
ignition coil. Make sure it locks in
place.
107
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