Yamaha YZ250 2021 - Checking and Replacing the Rear Wheel Sprocket; Installing the Rear Wheel; Rear Wheel; Removing the Rear Wheel

REAR WHEEL
4-3
EAM20096
REAR WHEEL
EAM30022
REMOVING THE REAR WHEEL
1. Use a maintenance stand to raise the rear
wheel off the ground.
WARNING
EWA13120
Securely support the vehicle so that there is
no danger of it falling over.
2. Remove:
• Rear wheel axle nut “1”
3. Loosen:
• Locknut “2”
4. Tighten:
• Adjusting bolt “3”
5. Remove:
• Rear wheel axle
• Rear wheel
TIP
• Push the rear wheel forward and remove the
drive chain from the rear wheel sprocket.
• Do not depress the brake pedal with the rear
wheel removed.
EAM30025
CHECKING AND REPLACING THE REAR
WHEEL SPROCKET
1. Check:
• Rear wheel sprocket
More than 1/4 tooth wear “a”  Replace the
rear wheel sprocket and the drive sprocket as
a set.
Bent tooth  Replace the rear wheel sprock-
et and the drive sprocket as a set.
2. Replace:
• Rear wheel sprocket
a. Remove the self-locking nuts and the rear
wheel sprocket.
b. Clean the rear wheel drive hub with a
clean cloth, especially the surfaces that
contact the sprocket.
c. Install the new rear wheel sprocket.
TIP
Tighten the self-locking nuts in stages and in a
crisscross pattern.
EAM30027
INSTALLING THE REAR WHEEL
1. Install:
• Rear wheel
TIP
Install the brake disc “1” between the brake pads
“2” correctly.
2. Install:
• Drive chain “1”
TIP
Push the rear wheel “2” forward and install the
drive chain.
1
2
3
b. Correct
1. Drive chain roller
2. Rear wheel sprocket
Rear wheel sprocket nut
42 N·m (4.2 kgf·m, 31 lb·ft)
G088904
T
R
.
.