According to {HEAD ~ another aspect} of the present invention, an adjustable wedge block is provided to limit the tilting angle of the control lever so as to confine {TAIL ~ the maximum output volume} of water 
According to { HEAD ~ another aspect } of the present invention , an adjustable wedge block is provided to limit the tilting angle of the control lever so as to confine { TAIL ~ the maximum output volume } of water
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH