Maintenance
83
3. Be sure to use the specified spark plug,
otherwise the engine may not operate
properly. Before fitting the spark plug,
measure the electrode gap with a wire
thickness gauge; replace it if out of spec-
ification.
4. When fitting the plug, wipe off any dirt
from the threads, and then screw it in to
the correct torque.
If a torque-wrench is not available when you
are fitting a spark plug, a good estimate of
the correct torque is 1/4 to 1/2 a turn past fin-
ger-tight. Have the spark plug adjusted to the
correct torque as soon as possible with a
torque-wrench.
EMU29044
Inspecting idle speed
EWM00451
Do not touch or remove electrical parts
when starting or during operation.
Keep hands, hair, and clothes away
from the flywheel and other rotating
parts while the engine is running.
ECM00490
This procedure must be performed while
the outboard motor is in the water. A
flushing attachment or test tank can be
1. Spark plug gap
2. Spark plug part number
3. Spark plug I.D. mark (NGK)
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Spark plug torque:
F40DET 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
F40GET 17.0 Nm
(1.73 kgf-m, 12.5 ft-lb)
F50FED 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
F50FET 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
F60CET 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
F70AET 17.0 Nm
(1.73 kgf-m, 12.5 ft-lb)
FT50GET 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
FT60DET 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
6C1-9-79-1E0.book 83 ページ ２０１１年３月１７日 木曜日 午後２時５４分
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