2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 293Get this manual
FRONT AND REAR BRAKES
REAR BRAKE CALIPER INSTALLATION 1.Install: Brake caliper assembly Brake caliper mounting bolt 1
30 Nm (3.0 kg, 22 ft lb)
Brake hose Copper washers New Union bolt 30 Nm (3.0 kg, 22 ft lb)
2.Fill: Brake reservoir Recommended brake fluid: DOT 4