Checking Fuel Filter; Inspecting Idling Speed - Yamaha F15C Owner's Manual

2. Remove the spark plug. If electrode ero-
sion becomes excessive, or if carbon
and other deposits are excessive, you
should replace the spark plug with an-
other of the correct type. WARNING!
When removing or installing a spark
plug, be careful not to damage the in-
sulator. A damaged insulator could
allow external sparks, which could
lead to explosion or fire.
Standard spark plug:
DPR6EB-9
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; adjust the gap to spec-
ification if necessary.
1. Spark plug gap
2. Spark plug I.D. mark (NGK)
3. Spark plug part number
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
4. When fitting the plug, wipe off any dirt
from the threads, and then screw it in to
Spark plug torque:
TIP:
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
[EWM00561]
correct torque as soon as possible with a
torque-wrench.
EMU37450

Checking fuel filter

Check the fuel filter periodically. If any water
or foreign matter is found in the filter, clean or
replace it. For cleaning or replacement of the
fuel filter, consult your Yamaha dealer.
EMU29041

Inspecting idling 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
NOTICE
This procedure must be performed while
the outboard motor is in the water. A
Maintenance
the correct torque.
18.0 Nm (1.84 kgf-m, 13.3 ft-lb)
WARNING
ZMU06169
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