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Air Filter Maintenance; Starting A Cold Engine - Yamaha WR450F Manual De Servicio Del Propietario

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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 kickstarter 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.

AIR FILTER MAINTENANCE

According to "AIR FILTER CLEANING" section
in the CHAPTER 3, apply the foam-air-filter oil
or its equivalent to the element. (Excess oil in
the element may adversely affect engine start-
ing.)

STARTING A COLD ENGINE

NOTE:
This model is equipped with an ignition circuit
cut-off system. The engine can be started
under the following conditions.
• When the transmission is in neutral.
• When the clutch is disengaged with the
transmission in any position. However, it is
recommended to shift into neutral before
starting the engine.
1. Inspect the coolant level.
2. Turn the fuel cock to "ON".
3. Push the main switch to "ON".
4. Shift the transmission into neutral.
5. Fully open the cold starter knob 1.
6. Start the engine by pushing the start switch
or by kicking the kickstarter.
1 - 22
GEN
INFO
accelerator
pump.
Therefore,

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