Yamaha YFM250XL(C) Service Manual page 32

Side clearance (installed)
2nd ring:
Type
Dimensions (B × T)
End gap (installed)
2
Side clearance
Oil ring:
Dimensions (B × T)
End gap (installed)
Crankshaft:
Crank width "A"
Runout limit C1
Big end side clearance "D"
Big end radial clearance "E"
Small end free play "F"
Balancer:
Balancer drive method
Clutch:
Friction plate:
MAINTENANCE SPECIFICATIONS
Item
T
T
E
F
C C
1 2
D
A
C2
Thickness
Quantity
Standard
0.03 ~ 0.07 mm
(0.001 ~ 0.003 in)
B
Taper
1.2 × 2.8 mm (0.047 ~ 0.110 in)
0.15 ~ 0.30 mm
(0.006 ~ 0.012 in)
0.02 ~ 0.06 mm
(0.0008 ~ 0.0024 in)
B
2.5 × 2.8 mm (0.098 × 0.110 in)
0.2 ~ 0.7 mm (0.008 ~ 0.028 in)
55.95 ~ 56.00 mm
(2.203 ~ 2.205 in)
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0.35 ~ 0.65 mm
(0.014 ~ 0.026 in)
0.010 ~ 0.025 mm
(0.0004 ~ 0.0010 in)
0.8 ~ 1.0 mm (0.032 ~ 0.040 in)
Gear
2.94 ~ 3.06 mm
(0.116 ~ 0.120 in)
5 pcs.
2 - 8
SPEC
Limit
0.12 mm
(0.005 in)
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0.4 mm
(0.016 in)
0.12 mm
(0.005 in)
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0.03 mm
(0.0012 in)
0.06 mm
(0.0024 in)
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2.0 mm
(0.08 in)
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2.8 mm
(0.110 in)
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