Honda BF20 BF2A Outboard Motors Manual, Page 35Get this manual
HONDA FOBF2A
DISASSEMBLY: 1) Rotate the crankshaft until the valve fully open, and then hold it open with the special tool2) Rotate the crankshaft back to lower the lifter, and then remove the adjusterAfter removing the adjuster, remove the special tool
Keep the adjusters in order so they can be reinstalled in their original locations
VALVE HOLDER NO07072-81 20000
121 ADJUSTER
3) Compress the springs with commercially available VALVE