According to 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 {HEAD ~ the maximum output volume} of {TAIL ~ water} 
of
According to 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 { HEAD ~ the maximum output volume } of { TAIL ~ water }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL