Yamaha XT660R S Service Manual page 36

Item
Clutch
Clutch type
Clutch release method
Operation
Clutch cable free play
(at the end of the clutch lever)
Friction plates 1
(inside dia.: 120 mm)
Thickness
Plate quantity
Friction plates 2
Thickness
Plate quantity
Friction plates 3
(inside dia.: 128 mm)
Thickness
Plate quantity
Clutch plates
Thickness
Plate quantity
Maximum warpage
Clutch spring
Free length
Spring quantity
Transmission
Transmission type
Primary reduction system
Primary reduction ratio
Secondary reduction system
Secondary reduction ratio
Operation
Gear ratios
1st gear
2nd gear
3rd gear
4th gear
5th gear
ENGINE SPECIFICATIONS
Wet, multiple disc
Outer pull, rack and pinion pull
Left-hand operation
10.0 ~ 15.0 mm (0.39 ~ 0.59 in)
2.90 ~ 3.10 mm (0.114 ~ 0.122 in)
4
2.92 ~ 3.08 mm (0.115 ~ 0.121 in)
2
2.90 ~ 3.10 mm (0.114 ~ 0.122 in)
1
1.50 ~ 1.70 mm (0.059 ~ 0.067 in)
6
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55.6 mm (2.19 in)
5
Constant mesh, 5-speed
Spur gear
75/36 (2.083)
Chain drive
45/15 (3.000)
Left-foot operation
30/12 (2.500)
26/16 (1.625)
23/20 (1.150)
20/22 (0.909)
20/26 (0.769)
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Standard
SPEC
Limit
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2.80 mm
(0.110 in)
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2.80 mm
(0.110 in)
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2.80 mm
(0.110 in)
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0.20 mm
(0.0079 in)
52.82 mm
(2.08 in)
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