Honda WX10TA Owner's Manual page 24

OPERATION
3. Press the priming pump several times until the priming pump is
filled with fuel.
Even if the priming pump is pressed too many times, the extra fuel
will return to the fuel tank.
If the priming pump is not pressed enough, the engine may not
start.
4. Turn the ignition switch to the ON position.
IGNITION SWITCH
22
FUEL RETURN TUBE
PRIMING PUMP
ON