Starting A Warm Engine; Restarting An Engine After A Fall; The Engine Fails To Start - Yamaha YZ450F(W) Owner's Service Manual

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STARTING AND BREAK-IN

STARTING A WARM ENGINE

Do not operate the cold starter knob and throt-
tle. Pull the hot starter lever 1 and start the
engine by kicking the kick starter forcefully with
a firm stroke.
As soon as the engine starts, release the hot
starter lever to close the air passage.

Restarting an engine after a fall

Pull the hot starter lever and start the engine.
As soon as the engine starts, release the hot
starter lever to close the air passage.

The engine fails to start

Pull the hot starter lever all the way out and
while holding the lever, kick the kick starter 10
to 20 times to clear the engine.
Then, restart the engine.
Refer to "Restarting an engine after a fall".
Air temperature = less than
5 °C (41 °F)
Air temperature = more
than 5 °C (41 °F)
Air temperature (normal tem-
perature) = between 5 °C
(41 °F) and 25 °C (77 °F)
Air temperature = more
than 25 °C (77 °F)
Starting an engine after a long
period of time
Restarting a warm engine
Restarting an engine after a fall
* Operate the throttle grip before kick starting.
CAUTION:
Observe the following break-in procedures
during initial operation to ensure optimum
performance and avoid engine damage.
1 - 16
GEN
INFO
Throttle
Cold
Hot
grip oper-
starter
starter
ation*
knob
lever
Open 3
ON
OFF
or 4 times
None
ON
OFF
None
ON/OFF
OFF
None
OFF
OFF
None
ON
OFF
None
OFF
ON
None
OFF
ON

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This manual is also suitable for:

Yz450f 2007Yz450f w 2007Yz450f 2006Yz450fw 2006

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