Honda CB250 Nighthawk Owner's Manual page 46

High Air Temperature
35°C (95°F) or above
1. Do not use the choke.
2. Open the throttle slightly.
3. Start the engine.
Low Air Temperature
10°C (50°F) or below
1. Follow steps 1-2 under
Temperature.
2. When engine rpm begins to pick up,
operate the choke knob to keep fast idle.
Starting & Stopping the Engine
Normal Air
3. Continue warming up the engine until it
runs smoothly and responds to the
throttle when the choke knob is at fully
OFF ( ). B
Extended use of the choke may impair
piston and cylinder wall lubrication
and damage the engine.
Snapping the throttle or fast idling for
more than about 5 minutes at normal air
temperature may cause exhaust pipe
discoloration.
Basic Operation & Riding
37