Removing The Rear Wheel (Disc); Disassembling The Rear Wheel; Checking The Rear Wheel; Checking And Replacing The Rear Wheel Sprocket - Yamaha XT250X Service Manual

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EAS22040

REMOVING THE REAR WHEEL (DISC)

1. Stand the vehicle on a level surface.
EWA13120
WARNING
Securely support the vehicle so that there is
no danger of it falling over.
NOTE:
Place the vehicle on a suitable stand so that the
rear wheel is elevated.
2. Elevate:
Rear wheel
G
3. Remove:
Drive chain case
G
Rear wheel axle nut
G
Drive chain adjusting plate "1"
G
Rear wheel axle "2"
G
Rear wheel "3"
G
3
1
NOTE:
Push the rear wheel forward and remove the
drive chain from the rear wheel sprocket.
EAS22080

DISASSEMBLING THE REAR WHEEL

1. Remove:
Oil seals
G
Wheel bearings
G
Refer to "DISASSEMBLING THE FRONT
WHEEL" on page 4-4.
EAS22100

CHECKING THE REAR WHEEL

1. Check:
Rear wheel axle
G
Rear wheel
G
Wheel bearings
G
Oil seals
G
Refer to "CHECKING THE FRONT WHEEL"
on page 4-4.
2. Check:
Tire
G
Rear wheel
G
Damage/wear → Replace.
Refer to "CHECKING THE TIRES" on page
3-23 and "CHECKING THE WHEELS" on
page 3-24.
3. Check:
Spokes
G
Bends/damage → Replace.
Loose → Tighten.
Refer to "CHECKING THE FRONT WHEEL"
on page 4-4.
4. Measure:
Radial rear wheel runout
G
Lateral rear wheel runout
G
Refer to "CHECKING THE FRONT WHEEL"
on page 4-4.
EAS22120
CHECKING AND REPLACING THE REAR
WHEEL SPROCKET
1. Check:
Rear wheel sprocket
G
More than 1/4 tooth "a" wear → Replace the
drive chain, drive sprocket, and rear wheel
sprocket as a set.
Bent teeth → Replace the drive chain, drive
sprocket, and rear wheel sprocket as a set.
2
a. 1/4 wear
b. Correct
1. Drive chain roller
2. Rear wheel sprocket
2. Replace:
Rear wheel sprocket
G
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
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.
4-10
REAR WHEEL
Radial wheel runout limit
2.0 mm (0.08 in)
Lateral wheel runout limit
2.0 mm (0.08 in)
1
a
2
b

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