1985-1987 Honda TRX 250 Fourtrax 250 Service Manual, Page 159Get this manual
BRAKES BRAKE BLEEDING Connect bleed hose to the bleed valvePump up the system pressure with the lever until there are no air bubbles in the fluid flowing out of the reservoir small hole and lever resistance is felt 1Squeeze the brake leveropen the bleed valve 1 turn and then close the valveNOTE
00 not release the brake lever until the bleed valve has been closed
2Release the brake lever slowly and wait several seconds after it reaches Ihe end of its travelRepeat steps and until bubbles cease to appear in the fluid coming out the bleeder valveFill the fluid reserVOlf to the upper level mark Reinstall the diaphragm and reservoir cover