Inspecting Idle Speed; Changing Engine Oil - Yamaha F4 Owner's Manual

Maintenance
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
EMU40140

Inspecting idle speed

ECM02230
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.
EMU39515

Changing engine oil

ECM01710
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.
Extract the engine oil with an oil changer.
1. Put the outboard motor in an upright po-
sition (not tilted). NOTICE: If the motor
is not level, the oil level indicated on
the dipstick may not be accurate.
[ECM01860]
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2. Start the engine. Warm it up and keep the
idle speed for 5-10 minutes.
3. Stop the engine and leave it for 5-10 min-
utes.
4. Remove the top cowling.
5. Remove the oil filler cap.
1
1. Oil filler cap
2. Oil lubrication check window
TIP:
The oil lubrication check window does not in-
dicate the engine oil level. Use the oil lubrica-
tion check window to make sure that the
engine is being lubricated with oil while it is
running.
6. Insert the tube of the oil changer into the
oil filler hole, and then extract the engine
oil completely using the oil changer.
ZMU06766
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ZMU06769