Removing The Swingarm; Checking The Swingarm - Yamaha 2009 YFM25RY Service Manual

EAS23340

REMOVING THE SWINGARM

1. Stand the vehicle on a level surface.
EWA13120
WARNING
Securely support the vehicle so that there
is no danger of it falling over.
TIP
Place the vehicle on a suitable stand so that
the rear wheel is elevated.
2. Measure:
• Swingarm side play
• Swingarm vertical movement
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a. Measure the tightening torque of the swing-
arm pivot shaft nut.
Pivot shaft nut
100 Nm (10.0 m·kg, 74 ft·lb)
b. Measure the swingarm side play "A" by
moving the swingarm from side to side.
c. If the swingarm side play is out of specifica-
tion, check the spacers and bearings.
Swingarm side play (at the end
of the swingarm)
1.0 mm (0.04 in)
d. Check the swingarm vertical movement "B"
by moving the swingarm up and down.
If swingarm vertical movement is not
smooth or if there is binding, check the
spacers and bearings.
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3. Remove:
• Pivot shaft nut
• Washer
• Pivot shaft
• Swingarm
EAS23360

CHECKING THE SWINGARM

1. Check:
• Swingarm
Bends/cracks/damage → Replace.
2. Check:
• Pivot shaft
Roll the pivot shaft on a flat surface.
Bends → Replace.
EWA13770
WARNING
Do not attempt to straighten a bent pivot
shaft.
3. Wash:
• Pivot shaft
• Dust covers
• Spacer
• Bearings
Recommended cleaning solvent
Kerosene
4. Check:
• Dust covers
• Spacer
• Oil seals
Damage/wear → Replace.
• Bearings
Damage/pitting → Replace.
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SWINGARM