1985-1986 Honda Fourtrax 125 TRX125 Shop Manual, Page 74Get this manual
CYLINDER HEADiVALVES
CYLINDER HEAD DISASSEMBLY
Remove the valve cottersspring retainers and valve springs with valve spring compressor
COMPRESSOR
07757- 0010000 or 07957- 3290001
Remove carbon deposits from the combustion chamberClean off any gasket material from the cyl inde r