2003 Johnson ST 6/8 HP 4 Stroke Outboards Service Manual, PN 5005471, Page 143Get this manual
POWERHEAD DISASSEMBLYHP Remove camshaft from the cylinder headvalve seal removedand spring assembly whenever
Use Valve Spring Compressor, PIN 341446, to facilitate removal of valves and componentsPosition compressor end on valve face and compressor ring on valve capCompress spring and remove cap, keepers, and springDO NOT compress spring completelyKeep components together and in order for reassembly