2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 432Get this manual
BRAKE SYSTEM Install tha hoot into the master cylinder
If the push rod joint is rei nsta lled, adjust he pus rod length so that the dis tance between the cen ters of th master cylinder low er mounting bolt hole and the cente rs of the joi nt pin hol is 80 mm (3.15 0.04 in) After adjustment, tighten the joint nutTORQUE181.8 kgfm13 Ibf.tt )
80 mm (3.15 0.04 inConnect he master cylinder to he brake peda with the joint pin and new cotter pin MASTER CYLINDE R