Yamaha YZ450F 2021 - Installing the Front Brake Master Cylinder

FRONT BRAKE
4-22
stall them as shown. Wrong orientation in in-
stallation causes poor braking performance.
3. Install:
• Spring “1”
Install to the brake master cylinder piston “2”.
TIP
Install the spring with a smaller inside diameter
to the brake master cylinder piston.
4. Install:
• Brake master cylinder kit “1”
• Washer “2”
• Circlip “3”
• Dust boot “4”
• Push rod “5”
TIP
• Before installation, apply brake fluid to the
brake master cylinder kit.
• Before installation, apply silicone grease to the
push rod end.
• Use circlip pliers to install the circlip.
EAM30039
INSTALLING THE FRONT BRAKE MASTER
CYLINDER
1. Install:
• Brake master cylinder “1”
TIP
• Install the front brake master cylinder holder
with the “UP” mark facing up.
• First, tighten the upper bolt, then the lower bolt.
2. Install:
• Copper washer
• Brake hose
• Union bolt
WARNING
EWA13531
Proper brake hose routing is essential to in-
sure safe vehicle operation.
NOTICE
ECA24470
During installation, bring the brake hose into
contact with the brake master cylinder pro-
jection “a” and make its bent portion “b”
face downward.
12
3
21
3
New
New
Brake master cylinder holder bolt
9 N·m (0.9 kgf·m, 6.6 lb·ft)
Brake hose union bolt
30 N·m (3.0 kgf·m, 22 lb·ft)
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R
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1
UP
New
T
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