Yamaha MT-09 2021 - Checking and Replacing the Rear Wheel Sprocket; Checking the Rear Wheel; Checking the Rear Wheel Drive Hub; Disassembling the Rear Wheel

4-21
REAR WHEEL
EAS30910
REMOVING THE REAR WHEEL
NOTICE
ECA21030
• Keep any type of magnets (including mag-
netic pick-up tools, magnetic screwdrivers,
etc.) away from the rear wheel sensor or
rear wheel sensor rotor; otherwise, the sen-
sor or rotor may be damaged, resulting in
improper performance of the ABS system.
• Do not drop the rear wheel sensor rotor or
subject it to shocks.
• If any solvent gets on the rear wheel sensor
rotor, wipe it off immediately.
1. Stand the vehicle on a level surface.
WARNING
EWA13120
Securely support the vehicle so that there is
no danger of it falling over.
TIP
Place the vehicle on a maintenance stand so
that the rear wheel is elevated.
2. Remove:
• Rear brake caliper
• Rear wheel sensor
NOTICE
ECA27270
• Do not depress the brake pedal when re-
moving the brake caliper.
• Be sure not to contact the sensor electrode
to any metal part when removing the rear
wheel sensor from the rear brake caliper
bracket assembly.
3. Loosen:
• Locknut
• Adjusting bolt
4. Remove:
• Wheel axle nut
• Washer
• Wheel axle
• Rear wheel
• Brake caliper bracket assembly
NOTICE
ECA27280
Be sure to remove the rear wheel sensor be-
fore removing the brake caliper bracket as-
sembly, otherwise the sensor could be
damaged.
TIP
Push the rear wheel forward and remove the
drive chain from the rear wheel sprocket.
EAS31154
DISASSEMBLING THE REAR WHEEL
NOTICE
ECA21340
• Do not drop the wheel sensor rotor or sub-
ject it to shocks.
• If any solvent gets on the wheel sensor ro-
tor, wipe it off immediately.
1. Remove:
• Oil seal
• Wheel bearing
Refer to “DISASSEMBLING THE FRONT
WHEEL” on page 4-13.
EAS30159
CHECKING THE REAR WHEEL
1. Check:
• Wheel axle
• Wheel bearing
• Oil seal
Refer to “CHECKING THE FRONT WHEEL”
on page 4-13.
2. Check:
•Tire
• Rear wheel
Damage/wear → Replace.
Refer to “CHECKING THE TIRES” on
page 3-16 and “CHECKING THE WHEELS”
on page 3-16.
3. Measure:
• Radial wheel runout
• Lateral wheel runout
Refer to “CHECKING THE FRONT WHEEL”
on page 4-13.
EAS30160
CHECKING THE REAR WHEEL DRIVE HUB
1. Check:
• Rear wheel drive hub
Cracks/damage → Replace.
• Rear wheel drive hub damper
Damage/wear → Replace.
EAS30161
CHECKING AND REPLACING THE REAR
WHEEL SPROCKET
1. Check:
• Rear wheel sprocket
More than 1/4 tooth “a” wear → Replace the
drive sprocket, the rear wheel sprocket and
the drive chain as a set.