Honda HS624 Owner's Manual page 27

OPERATION
3. Let the engine warm up for several minutes.
HS624/HS724/HS828/HS928:
If the throttle lever has been moved to the CHOKE position, gradually move
the throttle lever to the SLOW position as the engine warms up.
HS1132:
If the choke knob has been pulled to the CLOSED position to start the
engine, gradually push it to the OPEN position as the engine warms up.
Move the throttle lever to the SLOW position.
CHOKE KNOB THROTTLE LEVER
OPEN
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