Yamaha RAPTOR YFM125RA Service Manual page 159

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
3. Check:
• O-rings "1"
Damage → Replace the drive chain.
• Drive chain rollers "2"
Damage/wear → Replace the drive
chain.
• Drive chain side plates "3"
Damage/wear → Replace the drive
chain.
Cracks → Replace the drive chain.
4. Lubricate:
• Drive chain
Recommended lubricant
Engine oil or chain lubricant
suitable for O-ring chains
EAS23460
CHECKING THE DRIVE SPROCKET
1. Check:
• Drive sprocket
More than 1/4 tooth "a" wear → Replace
the drive chain sprockets as a set.
Bent teeth → Replace the drive chain
sprockets as a set.
b. Correct
1. Drive chain roller
2. Drive chain sprocket
EAS23470
CHECKING THE REAR WHEEL SPROCKET
Refer to "CHECKING THE DRIVE
SPROCKET" on page 4-60.
EAS4D3F030
CHECKING THE SPROCKET BRACKET
Refer to "CHECKING THE SPROCKET
BRACKET" on page 4-15.
EAS23500
INSTALLING THE DRIVE CHAIN
1. Lubricate:
• Drive chain
Recommended lubricant
Engine oil or chain lubricant
suitable for O-ring chains
2. Install:
• Drive chain
• Drive sprocket
• Drive sprocket lock plate
• Drive sprocket bolts
Drive sprocket bolt
6 Nm (0.6 m·kgf, 4.3 ft·lbf)
TIP
While applying the rear brake, tighten the drive
sprocket bolt.
3. Install:
• Swingarm
Refer to "SWINGARM" on page 4-55.
4. Adjust:
• Drive chain slack
Refer to "ADJUSTING THE DRIVE
CHAIN SLACK" on page 3-17.
Drive chain slack
45.0–55.0 mm (1.77–2.17 in)
4-60
CHAIN DRIVE