Honda CRF50F 2017 Owner's Manual page 53

High Air Temperature
35°C (95°F) or above
1. Do not use the choke.
2. Start the engine following step 2 under
''Normal Air Temperature''.
Low Air Temperature
10°C (50°F) or below
1. Follow steps 1 – 2 under ''Normal Air
Temperature''.
2. Warm up the engine by opening and
closing the throttle slightly.
3. Continue warming up the engine until it
idles smoothly and responds to the
throttle with the choke lever (1) OFF
(C).
42
NOTICE
Extended use of the choke may impair
piston and cylinder wall lubrication and
damage the engine.