2002 Honda BF25A BF30A Outboards Owner's Manual, Page 20Get this manual
CONTROLS AND FEATURES ChokeFast Idle Lever (side-mount type)
N (neutral) n
GearshiftThrottle Control Lever (side-mount type)
GEARSHIFTRHROTTLE CONTROL LEVER
The chokefast idle lever opens and closes the choke valves in the carburetorsThe CHOKE position enriches the fuel mixture for starting cold engineThe raised lever positions also increase the idle speed to prevent stalling