Checking Fuel Filter; Inspecting Idle Speed; Changing Engine Oil - Yamaha F2.5A Owner's Manual

Spark plug torque:
F2.5AMH 25 Nm (2.55 kgf-m,
18.4 ft-lb)
F4BMH 13 Nm (1.33 kgf-m, 9.6 ft-lb)
F5AMH 13 Nm (1.33 kgf-m, 9.6 ft-lb)
F6CMH 13 Nm (1.33 kgf-m, 9.6 ft-lb)
TIP:
If a torque-wrench is not available when you
are reinstalling a spark plug, a good estimate
of the correct torque is 1/12 turn past finger-
tight. When you are installing a new spark
plug, a good estimate of the correct torque is
1/2 to 2/3 turn past finger-tight.
EMU42464

Checking fuel filter

F2.5A
For cleaning or replacement of the fuel filters
at the intervals specified in the periodic main-
tenance chart, consult a Yamaha dealer.
F4B, F5A, F6C
The fuel filters are located in the filler hole of
the built-in fuel tank and in the bottom cowl-
ing. Check the fuel filters periodically. If for-
eign material is found in the filters, clean or
replace them. For cleaning or replacement of
the fuel filters, consult a Yamaha dealer.
1
1. Fuel filter
1
ZMU06765
EMU40141

Inspecting idle speed

ECM02231
NOTICE
When checking the engine idle speed,
make sure to supply water to the cooling
water passages by placing the outboard
motor in the water or by using a flushing
attachment or test tank.
To check the engine idle speed, a diagnostic
tachometer is required. For checking or ad-
justment of the engine idle speed, consult a
Yamaha dealer.
EMU42913

Changing engine oil

F2.5A
Change the engine oil several minutes after
the engine has been stopped, so that the oil
is still warm, but not hot.
EWM01951
WARNING
Be sure the outboard motor is securely
fastened to the transom or a stable stand.
ECM01711
NOTICE
Change the engine oil after the first 20
hours of operation or 3 months, and every
100 hours or at 1-year intervals thereafter.
Otherwise the engine will wear quickly.
1. Put the outboard motor in an upright po-
sition (not tilted). NOTICE: If the out-
board motor is not level, the oil level
indicated on the oil dipstick may not
be accurate.
[ECM01862]
Maintenance
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