2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 422Get this manual
BRAKE SYSTEM INSPECTION Check the mas ter cylinder and master piston fo scoring, scratches damageCheck he piston cups and oil seal fo wear, deteriorat io or dam aqa.0 Measur the master cy linder SERVICE LIMIT: 14.055 mm (0.5333 in)
Measu re he master cy linder isto .0
SERVICE LIMIT: 13.945 mm 10.5490 in)
ASSEMBLY
Coat the aste pistonpiston cups and oil seal with clean DOT brake fluidInsta ll the oil seal into he maste cyl inderlnst elt he sp ring onto he piston endDu riot
t ff HIUW
MA STER CYLINDE R
Inst all he spri ng and ma ster piston into the ma ster