Honda GX120 Owner's Manual page 22

OPERATION
STOPPING THE ENGINE
To stop the engine in an emergency, simply turn the engine switch to
the OFF position. Under normal conditions, use the following
procedure.
1.
Move the throttle lever to the SLOW position.
Some engine applications use a remotely-mounted throttle control
rather than the engine-mounted throttle lever shown here.
THROlTLE LEVER
2. Turn the engine switch to the OFF position.
ALL ENGINES EXCEPT QXEZ QXEZ TYPE
ENGINE SWITCH
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