Yamaha YZ450FY 2009 Owner's Service Manual page 240

HANDLING NOTE
Support the machine securely so there is no
danger of it falling over.
REMOVING THE BEARING
1. Remove:
• Bearing "1"
Remove the bearing by pressing its outer race.
CHECKING THE SWINGARM
1. Inspect:
• Bearing "1"
• Bushing "2"
Free play exists/unsmooth revolution/rust →
Replace bearing and bushing as a set.
2. Inspect:
• Oil seal "3"
Damage → Replace.
CHECKING THE RELAY ARM
1. 5294Inspect:
• Bearing "1"
• Collar "2"
Free play exists/unsmooth revolution/rust →
Replace bearing and collar as a set.
2. Inspect:
• Oil seal "3"
Damage → Replace.
CHECKING THE CONNECTING ROD
1. Inspect:
• Bearing "1"
• Collar "2"
Free play exists/unsmooth revolution/rust →
Replace bearing and collar as a set.
2. Inspect:
• Oil seal "3"
Damage → Replace.
5-49
SWINGARM