Yamaha WR450FX Owner's Service Manual page 166

DISASSEMBLING THE BRAKE MASTER CYLINDER
Order
1 Brake master cylinder cap
2 Diaphragm
3 Reservoir float
4 Brake master cylinder boot
5 Circlip
6 Washer
7 Push rod
8 Brake master cylinder kit
FRONT BRAKE AND REAR BRAKE
Part name
6-9
Q'ty Remarks
A. Front
B. Rear
1
1
1
1
1 Use a long nose circlip pliers.
1
1
1