Yamaha YFM90RA Model Vehicle User Manual


 
CHECKING THE REAR AXLE
1. Check:
• rear axle runout
Out of specification Replace.
WARNING
Do not attempt to straighten a bent axle.
CHECKING THE DRIVEN SPROCKET
1. Check:
• driven sprocket
Refer to “REAR SHOCK ABSORBER,
SWINGARM AND DRIVE CHAIN”.
INSTALLING THE DRIVEN SPROCKET
1. Install:
• driven sprocket
TIP
Make sure that the blunt-edged corner of
the driven sprocket is facing outward.
Rear axle runout limit
1.5 mm (0.06 in)
a
a
6 - 14
CHAS
REAR AXLE AND REAR AXLE HUB
CHECKING THE BRAKE DISC
1. Check:
• brake disc
Galling/damage Replace.
2. Measure:
• brake disc deflection
Out of specification Replace.
• brake disc thickness
Out of specificationReplace.
Brake disc maximum deflection
0.15 mm (0.006 in)
Brake disc minimum thickness
3 mm (0.12 in)