Checking The Drive Sprocket; Installing The Drive Chain - Yamaha XT250X Service Manual

b. Put the drive chain in kerosene and remove
any remaining dirt.
c. Remove the drive chain from the kerosene
and completely dry it.
EC3C51003
CAUTION:
This vehicle has a drive chain with small rub-
ber O-rings "1" between the drive chain side
plates. Steam cleaning, high-pressure wash-
ing, certain solvents, and the use of a coarse
brush can damage these O-rings.
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
4. Check:
O-rings "1"
G
Damage → Replace the drive chain.
Drive chain rollers "2"
G
Damage/wear → Replace the drive chain.
Drive chain side plates "3"
G
Damage/wear → Replace the drive chain.
Cracks → Replace the drive chain.
5. Lubricate:
Drive chain
G
Recommended lubricant
Engine oil or chain lubricant
suitable for O-ring chains
EAS23460

CHECKING THE DRIVE SPROCKET

1. Check:
Drive sprocket
G
Refer to "CHECKING AND REPLACING
THE REAR WHEEL SPROCKET" on page
4-10.
EAS23490

INSTALLING THE DRIVE CHAIN

1. Lubricate:
Drive chain
G
Recommended lubricant
Engine oil or chain lubricant
suitable for O-ring chains
2. Install:
Drive chain
G
Drive sprocket "1"
G
Lock washer "2"
G
Drive sprocket nut "3"
G
(temporarily)
NOTE:
While applying the drive sprocket, tighten the
drive sprocket nut.
1
New
2
3
3. Install:
Swingarm
G
Refer to "SWINGARM" on page 4-54.
Rear wheel
G
Refer to "REAR WHEEL" on page 4-8.
4. Install:
Lock washer "1"
G
Drive sprocket "2"
G
Drive sprocket nut
110 Nm (11.0 m•kg, 80 ft•lb)
4-59
CHAIN DRIVE
New