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Yamaha 4AC User Manual

Yamaha 4AC
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Operation
26
EMU27141
Engine
Check the engine and engine mounting.
Look for loose or damaged fasteners.
Check the propeller for damage.
EMU36953
Install cowling
1. Be sure that a cowling lock lever is re-
leased.
2. Be sure that the rubber seal is seated all
the way around the top cowling.
3. Place the top cowling on bottom cowling.
4. Check to be sure the rubber seal fits cor-
rectly all the way around the engine.
5. Move the lever to lock the cowling as
shown. NOTICE: If the cowling is not
installed correctly, water spray under
the cowling can damage the engine, or
the cowling can blow off at high
speeds.
[ECM01990]
After installing, check the fitting of the top
cowling by pushing it with both hands. If the
top cowling is loose, have it repaired by your
Yamaha dealer.
EMU27234
Filling fuel and engine oil
EMU27247
Filling fuel for portable tank
WARNING
EWM01830
Gasoline and its vapors are highly flam-
mable and explosive. Always refuel ac-
cording to this procedure to reduce the
risk of fire and explosion.
Gasoline is poisonous and can cause in-
jury or death. Handle gasoline with care.
Never siphon gasoline by mouth. If you
should swallow some gasoline or inhale
a lot of gasoline vapor, or get some gas-
oline in your eyes, see your doctor im-
mediately. If gasoline spills on your
skin, wash with soap and water. If gaso-
line spills on your clothing, change your
clothes.
1. Be sure the engine is stopped.
2. Disconnect the fuel line from the fuel tank
and tighten the air vent screw on the fuel
tank cap.
ZMU06114
U6E028E0.book Page 26 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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