1986-1991 Kawasaki 650 X-2 Service Manual, Page 71Get this manual
ENGINE BOTTOM END 7-7 -While holding the cable in position, attach the control valve to the drain hole in the reed valve cover, and then install the assembly on the lower crankcase ha.lf
ADrain Hole
Reed Valve Assembily Gasket Reed Valve Cover Cover Bolt Valve Cap
Control Valve E-ring Spring Control Valve Housing Mounting Bolt