Starting And Break-In - Yamaha YZ450F(V) Owner's Service Manual

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STARTING AND BREAK-IN

STARTING AND BREAK-IN
WARNING
Never start or run the engine in a closed
area. The exhaust fumes are poisonous;
they can cause loss of consciousness and
death in a very short time. Always operate
the machine in a well-ventilated area.
CAUTION:
• The carburetor on this machine has a
built-in
when starting the engine, do not operate
the throttle or the spark plug will foul.
• Unlike a two-stroke engine, this engine
cannot be kick started when the throttle is
open because the kick starter may kick
back. Also, if the throttle is open the air/
fuel mixture may be too lean for the
engine to start.
• Before starting the machine, perform the
checks in the pre-operation check list.
STARTING A COLD ENGINE
1. Inspect the coolant level.
2. Turn the fuel cock to "ON".
3. Shift the transmission into neutral.
4. Fully open the cold starter knob 1.
5. Kick the kick starter.
WARNING
Do not open the throttle while kicking the
kick starter. Otherwise, the kick starter may
kick back.
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GEN
INFO
accelerator
pump.
Therefore,

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2005 yz450fYz450f 2006Yz450fv 2006Yz450f

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