Yamaha YFM660RN, Service Manual, Page: 228 / 328

5 - 48
ENG
CLUTCH
CHECKING THE FRICTION PLATE
The following procedure applies to all of the
friction plates.
1.Check:
●
Friction plate
Damage/wear
→
Replace the friction plates
as a set.
2.Measure:
●
Friction plate thickness
Out of specification
→
Replace the friction
plates as a set.
NOTE:
Measure the friction plate at four places.
Friction plate 1 thickness:
2.74 ~ 2.86 mm (0.108 ~ 0.113 in)
<Limit>: 2.6 mm (0.102 in)
Friction plate 2 thickness:
2.94 ~ 3.06 mm (0.116 ~ 0.120 in)
<Limit>: 2.8 mm (0.110 in)
CHECKING THE CLUTCH PLATE
The following procedure applies to all of the
clutch plates.
1.Check:
●
Clutch plate
Damage
→
Replace the clutch plates as a
set.
2.Measure:
●
Clutch plate warpage
(with a surface plate and thickness gauge
1
)
Out of specification
→
Replace the clutch
plates as a set.
Maximum clutch plate warpage:
0.2 mm (0.008 in)