Yamaha WR250F(N), Owner'S Service Manual

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GEN
INFO
STARTING AND BREAK-IN
STARTING A WARM ENGINE
Do not operate the cold starter knob and throt-
tle. Open the hot starter knob (red) and start
the engine by kicking the kickstarter crank
forcefully with a firm stroke.
As soon as the engine starts, push in the hot
starter knob to close the air passage.
Restarting an engine after a fall
Pull the hot starter knob (red) and start the
engine. As soon as the engine starts, push in
the hot starter knob to close the air passage.
The engine fails to start
Pull the hot starter knob (red) all the way out,
pull the decompression lever to the handlebar,
and while holding the lever, kick the kickstarter
crank 10 to 20 times to clear the engine.
Then, restart the engine.
Refer to “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.
Throttle
grip oper-
ation*
Cold
starter
knob
Hot
starter
knob (red)
Starting a cold engine
Air temperature = less than
5 ˚C (41 ˚F)
Open 3
or 4 times
ON OFF
Air temperature = more
than 5 ˚C (41 ˚F)
None ON OFF
Air temperature (normal tem-
perature) = between 5 ˚C
(41 ˚F) and 25 ˚C (77 ˚F)
None ON/OFF OFF
Air temperature = more
than 25 ˚C (77 ˚F)
None OFF OFF
Starting an engine after a long
period of time
None ON OFF
Restarting a warm engine None OFF ON
Restarting an engine after a fall None OFF ON