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Yamaha 4AC User Manual

Yamaha 4AC
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Operation
28
3. Remove the portable tank from the boat.
4. Be sure you are in a well-ventilated out-
door area, either securely moored or trail-
ered.
5. Do not smoke and keep away from
sparks, flames, static electric discharge,
or other sources of ignition.
6. If you use a portable container to store
and dispense fuel, only use a locally ap-
proved GASOLINE container.
7. Touch the fuel nozzle to the filler opening
or funnel to help prevent electrostatic
sparks.
8. Fill the fuel tank, but do not overfill. Fuel
can expand and overflow if the tempera-
ture increases.
9. Tighten the filler cap securely.
10. Wipe up any spilled gasoline immediately
with dry rags. Dispose rags properly ac-
cording to local laws or regulations.
EMU27406
Gasoline and oil mixing (100:1)
NOTICE
ECM00811
Avoid using any oil other than the spec-
ified type.
Use a thoroughly blended fuel-oil mix-
ture.
If the mixture is not thoroughly mixed, or
if the mixing ratio is incorrect, the fol-
lowing problems could occur.
Low oil ratio: Lack of oil could cause ma-
jor engine trouble, such as piston sei-
zure.
High oil ratio: Too much oil could cause
fouled spark plugs, smoky exhaust, and
heavy carbon deposits.
Fuel tank capacity:
2.8 L (0.74 US gal, 0.62 Imp.gal)
ZMU06621
Gasoline to engine oil
ratio
Break-in period See page 24
After break-in 100:1
U6E028E0.book Page 28 Tuesday, February 10, 2009 3:19 PM

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Yamaha 4AC Specifications

General IconGeneral
Fuel Induction SystemCarburetor
Starting SystemManual
Gear Ratio2.08:1
Engine Type2-stroke
Prop Shaft Horsepower / Max. Output / Max Power4 hp
Full Throttle RPM Range4, 500 - 5, 500 rpm
Ignition SystemCDI
Lubrication SystemPremix
Gear ShiftF-N
Shaft LengthS

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