2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 416Get this manual
BRAKE SYSTEM If the hraka bleede is not available, perform the Iollowing proce dure: Pump up he syste pressure wit the tr ent rake lever unti the lever resistance is feltConn ect bleed hose to he fro nt brake calip er bleed valve and bleed the system as foll ow s:
Do nO! ",J( f fh l' bra, lever uf't il rhe
)1 81;1(1 vllve hilI
1Sq ueeze he brake Inver all the way and loosen he bleed va lve 12 of urnWait seve ral seco nds and then close the bleed valve