Checking Fuel Filter; Inspecting Idling Speed - Yamaha F25 Owner's Manual
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- Owner's manual (122 pages) ,
- Service manual (43 pages) ,
- User manual (25 pages)
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move and inspect the spark plug because
heat and deposits will cause the spark plug
to slowly break down and erode.
1.
Remove the spark plug caps from the
spark plugs.
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; replace it if out of spec-
ification.
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.
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
correct torque as soon as possible with a
torque-wrench.
EMU37450
[EWM00561]
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.
EMU29043
Inspecting idling speed
EWM00451
G
G
Maintenance
When fitting the plug, wipe off any dirt
from the threads, and then screw it in to
the correct torque.
Spark plug torque:
17.0 Nm (1.73 kgf-m, 12.5 ft-lb)
WARNING
Do not touch or remove electrical parts
when starting or during operation.
Keep hands, hair, and clothes away
from the flywheel and other rotating
ZMU06513
79
- Quick Links:
- Engine Oil Requirements
- Changing Engine Oil
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