Yamaha WR450F 2021 Owner's Service Manual page 157

Removing the rear brake master cylinder
Order Job/Parts to remove
Brake fluid
1 Union bolt
2 Copper washer
3 Brake hose
4 Split pin
5 Washer
6 Pin
7 Brake master cylinder reservoir cap
8 Brake master cylinder reservoir diaphragm plate
9 Brake master cylinder reservoir diaphragm
10 Rear brake master cylinder
1.5 N ・ m (0.15 kgf ・ m, 1.1 lb ・ ft)
30 N ・ m (3.0 kgf ・ m, 22 lb ・ ft)
7
8
9
2
10
6
Q'ty
Drain.
Refer to "BLEEDING THE HYDRAULIC
BRAKE SYSTEM" on page 3-25.
1
2
1
1
1
1
1
1
1
1
4-29
REAR BRAKE
10 N ・ m (1.0 kgf ・ m, 7.4 lb ・ ft)
1
3
5
4
Remarks