2007-2010 Honda FourTrax Rancher 420 TRX420 TRX Service Manual, Page 230Get this manual
Quality of the image is intentionally reduced!
CYLINDER HEADIVALVE REFACING Follow the refacmg operating Instructions
ROUGHNESS
07780-0010500 07780-0010800 07781 -0010101
'01'08 mo de ls: Cutte holde r, 5.5 mm After