Honda FR600 Owner's Manual page 15

4. STARTING THE ENGINE
Start the engine outdoors. If you run the engine in an area that is
confined, or even partially enclosed, the air can become contaminated
with a dangerous amount of exhaust gas.
Exhaust contains poisonous carbon monoxide, a colorless and
odorless gas. Breathing exhaust can cause loss of consciousness and
may lead to death. To keep exhaust gas from building up, provide
adequate ventilation.
l.Turn the fuel valve to the ON
position.
Be sure that the drain knob is
tightened securely.
DRAIN KNOB
2.Turn the engine switch to the ON
position.
3. In cold weather and when the
engine is cold, move the choke
lever to the ON (closed) position.
NOTE:
Do not use the choke if the engine is
warm or the air temperature is high.
(closed)