Maintenance
and other deposits are excessive, you
TIP:
should replace the spark plug with an- If a torque-wrench is not available when you
other of the correct type. WARNING! are fitting a spark plug, a good estimate of
When removing or installing a spark
plug, be careful not to damage the in-
sulator. A damaged insulator could
allow external sparks, which could
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.
lead to explosion or fire.
[EWM00561]
EMU37450
Checking fuel filter
Standard spark plug:
B8HS-10
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.
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.
ZMU06150
EMU29043
Inspecting idling speed
EWM00451
WARNING
q
q
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.
1
3
. Spark plug gap
2.
Spark plug part number
. Spark plug I.D. mark (NGK)
Spark plug gap:
ECM00490
0.9
–1.0 mm (0.035–0.039 in)
NOTICE
This procedure must be performed while
the outboard motor is in the water. A
flushing attachment or test tank can be
used.
4.
When fitting the plug, wipe off any dirt
from the threads, and then screw it in to
the correct torque.
Spark plug torque:
If the boat is not equipped with a tachometer
for the outboard motor, use a diagnostic ta-
25.0
Nm (2.55 kgf-m, 18.4 ft-lb)
63
| Categories | Marine, Yamaha Outboard Manuals |
|---|---|
| Document Type | Boat Motor Manual Free Download. Marine Operator's Boating Guide. |
| Tags | Yamaha 50 |
| Model Year | 2007 |
| Download File |
|
| Language | English |
| Product Brand | Yamaha Motor. Yamaha Motor Corporation, USA - Support Customer Relations for US: 1-800-962-7926
Yamaha Boats: 1-800-962-7926 Yamaha Outboard Customer Relations: 1-866-894-1626 , Yamaha Outboard |
| Document File Type | |
| Publisher | yamaha-motor.com |
| Wikipedia's Page | Yamaha Motor Company |
| Copyright | Attribution Non-commercial |
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