Owner's Manual

SERVICING YOUR OUTBOARD MOTOR
SPARK PLUG
WRENCH
6. Remove the spark plugs with a
spark plug wrench and 17 mm
wrench.
7. Inspect the spark plugs. Replace
them if the electrodes are worn, or
if the insulators are cracked or
chipped.
8. Measure the spark plug electrode
gap with a suitable gauge. The gap
should be
0.039 - 0.051 inches
(1.00 - 1.30 mm). If the gap is
out of the speciticution, replace the
plug with
a new one. Never try to
readjust the gap.
9. Install the spark plugs carefully,
by hand, to avoid cross-threading.
10. After each spark plug seats, tighten
with a spark plug wrench supplied
in the tool kit to compress the
sealing washer.
If reinstalling the used spark plugs,
tighten
1/8 - 1/4 turn after the
spark plugs seat.
If reinstalling new spark plugs,
tighten
1/2 turn after the spark
plugs seat.
I NOTICE I
Loose spark plugs can overheat
and damage the engine.
Overtightening the spark plugs
can damage the threads in the
cylinder head.
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