Preoperation Checks; Fuel; Controls; Engine - Yamaha F9.9 Owner's Manual

Run the engine at 2000 r/min or at ap-
proximately half throttle.
2. Second hour:
Run the engine at 3000 r/min or at ap-
proximately three-quarter throttle.
3. Remaining eight hours:
Run the engine at any speed. However,
avoid operating at full throttle for more
than 5 minutes at a time.
4. After the first 10 hours:
Operate the engine normally.
EMU27103

Preoperation checks

EWM00080
WARNING
If any item in the preoperation check is
not working properly, have it inspected
and repaired before operating the out-
board motor. Otherwise an accident
could occur.
ECM00120
CAUTION:
Do not start the engine out of water. Over-
heating and serious engine damage can
occur.
EMU27111

Fuel

Check to be sure you have plenty of fuel
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for your trip.
Make sure there are no fuel leaks or gaso-
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line fumes.
Check fuel line connections to be sure they
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are tight (if equipped Yamaha fuel tank or
boat tank).
Be sure the fuel tank is positioned on a se-
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cure, flat surface, and that the fuel line is
not twisted or flattened, or likely to contact
sharp objects (if equipped Yamaha fuel
tank or boat tank).
EMU27130

Controls

Check throttle, shift, and steering for prop-
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er operation before starting the engine.
The controls should work smoothly, with-
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out binding or unusual free play.
Look for loose or damaged connections.
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Check operation of the starter and stop
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switches when the outboard motor is in the
water.
EMU27140

Engine

Check the engine and engine mounting.
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Look for loose or damaged fasteners.
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Check the propeller for damage.
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EMU27163

Checking the engine oil level

1. Put the outboard motor in an upright po-
sition (not tilted).
2. Remove oil dipstick and wipe it clean.
3. Completely insert the dipstick and re-
move it again.
4. Check the oil level using the dipstick to
be sure the level falls between the upper
and lower marks. Fill with oil if it is below
the lower mark, or drain to the specified
level if it is above the upper mark.
1. Oil dipstick
Operation
1
ZMU04378
24