Yamaha YFM50S Service Manual page 30

Item
Oil ring
Dimensions (B × T)
End gap (installed)
Crankshaft
C1
Crank width "A"
Runout limit C1
C2
Big end side clearance "D"
Big end radial clearance "E"
Small end free play "F"
Clutch
Friction plate 1 (with black color marking)
Thickness
Quantity
Friction plate 2
Thickness
Quantity
ENGINE SPECIFICATIONS
B
T
2.0 × 2.0 mm
(0.0787 × 0.0787 in)
0.20 ~ 0.70 mm
(0.0079 ~ 0.0276 in)
F
C2
E
D
A
40.20 ~ 40.25 mm
(1.5827 ~ 1.5846 in)
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0.10 ~ 0.40 mm
(0.0039 ~ 0.0157 in)
0.004 ~ 0.019 mm
(0.0002 ~ 0.0007 in)
0.80 ~ 1.00 mm
(0.0315 ~ 0.0394 in)
2.92 ~ 3.08 mm
(0.115 ~ 0.121 in)
4
2.92 ~ 3.08 mm
(0.115 ~ 0.121 in)
1
2 - 8
SPEC
Standard Limit
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0.05 mm
(0.0020 in)
0.04 mm
(0.0016 in)
0.50 mm
(0.0197 in)
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1.50 mm
(0.0591 in)
2.90 mm
(0.114 in)
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2.90 mm
(0.114 in)
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