2003 Kawasaki KLF250 Service Manual., Page 84Get this manual
ENGINE TOP END 4-25 Valves, Guides, Seats, Springs, Oil Seals
Valve Guide Installation
valve guide hole Clean the the valve guidein the cylinder headLightly oil Set the O-ring under the valve guide flange Use the valve guide arbor and hammer to drive the guide into the head from the outside until the flange on
the guide seats against the headReam the valve guide with the valve guide reamer [A] even if the old guide is reusedSpecial ToolValve Guide Reamer, 5.557001-1020