1986-1991 Kawasaki 650 X-2 Service Manual, Page 185Get this manual
SUPPlEMENT- 1991 MODEL 20-11
BThrottle Case Lever
CRetum Spring
ARubber Seal
If there is any doubt as to the condition of the rubber
a Pull the throtHe control lever out of tile casea Pull the control lever pivot bushings out of the caseOne is toward the outside and the other is to the insideThere is an O-ring between them
coating on tile steel plate or the rubber seal on the throttle lever pivot replace with new one.Lubrlicat,e the thrott.le case and cable before assemb:ly installation (see Throttle Case and Cable Lubrication) Be certain that the return spring is correctly ,installed on the throttle lever