Yamaha MT-09 2021 - Adjusting the Footrest Position; Checking the Rear Brake Disc; Introduction

4-43
REAR BRAKE
EAS33521
ADJUSTING THE FOOTREST POSITION
1. Check:
• Footrest position
TIP
The rider footrests can be adjusted to one of two
positions. From the factory, the footrests are in
the low position.
2. Adjust:
a. Remove the footrest assembly (left and
right) “1”.
b. Adjust the footrest position (low or high po-
sition).
c. Install the footrest assembly (left and right).
EAS30183
INTRODUCTION
WARNING
EWA14101
Disc brake components rarely require disas-
sembly. Therefore, always follow these pre-
ventive measures:
• Never disassemble brake components un-
less absolutely necessary.
• If any connection on the hydraulic brake
system is disconnected, the entire brake
system must be disassembled, drained,
cleaned, properly filled, and bled after reas-
sembly.
• Never use solvents on internal brake com-
ponents.
• Use only clean or new brake fluid for clean-
ing brake components.
• Brake fluid may damage painted surfaces
and plastic parts. Therefore, always clean
up any spilt brake fluid immediately.
• Avoid brake fluid coming into contact with
the eyes as it can cause serious injury.
FIRST AID FOR BRAKE FLUID ENTERING
THE EYES:
• Flush with water for 15 minutes and get im-
mediate medical attention.
EAS30184
CHECKING THE REAR BRAKE DISC
1. Check:
• Rear brake disc
Damage/galling → Replace.
2. Measure:
• Brake disc runout
Out of specification → Replace.
Refer to “CHECKING THE FRONT BRAKE
DISCS” on page 4-31.
3. Measure:
• Brake disc thickness
Measure the brake disc thickness at a few dif-
ferent locations.
Out of specification → Replace.
Refer to “CHECKING THE FRONT BRAKE
DISCS” on page 4-31.
Footrest assembly bolt
28 N·m (2.8 kgf·m, 21 lb·ft)
A. Left side
B. Right side
T
R
.
.
1
A
1
B
Brake disc runout limit (as mea-
sured on wheel)
0.15 mm (0.0059 in)
Brake disc thickness limit
4.5 mm (0.18 in)