Yamaha F9.9 Manuel De L'utilisateur page 60

Operation
8. Return the choke knob to the home posi-
tion gradually.
TIP:
 If the choke knob is left in the "
position while the engine is running, the en-
gine will run poorly or stall.
 When the engine is cold, for example,
when the ambient temperature is low in
winter, it needs to be warmed up. For fur-
ther information, see page 57.
Starting procedure (warm engine)
1. Place the gear shift lever in neutral.
2. Attach the engine shut-off cord to a se-
cure place on your clothing, or your arm
or leg. Then install the clip on the other
end of the cord into the engine shut-off
switch.
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ZMU02030
3. Place the throttle grip in the "
(start) position.
" (start)
4. Push the starter button to start the en-
gine.
"