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Yamaha 4AC User Manual

Yamaha 4AC
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Operation
31
EMU27474
Sending fuel
WARNING
EWM00420
Before starting the engine, make sure
that the boat is tightly moored and that
you can steer clear of any obstructions.
Be sure there are no swimmers in the
water near you.
When the air vent screw is loosened,
gasoline vapor will be released. Gaso-
line is highly flammable, and its vapors
are flammable and explosive. Refrain
from smoking, and keep away from
open flames and sparks while loosening
the air vent screw.
This product emits exhaust gases which
contain carbon monoxide, a colorless,
odorless gas which could cause brain
damage or death when inhaled. Symp-
toms include nausea, dizziness, and
drowsiness. Keep cockpit and cabin ar-
eas well ventilated. Avoid blocking ex-
haust outlets.
1. For the built in tank, loosen the air vent
screw on the fuel tank cap by one turn.
For the external fuel tank, loosen it on the
fuel tank cap by 2 or 3 turns.
2. Select the fuel tank using the fuel cock or
open the fuel cock.
3. If you are using an external fuel tank, con-
nect the fuel joints securely and squeeze
the primer pump, with the arrow pointing
up, until you feel it become firm (if
equipped the fuel joint).
U6E028E0.book Page 31 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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