Yamaha YP250R 2005 Service Manual page 29

Item
Oil ring
Dimensions (B × T)
End gap (installed)
Ring side clearance
Crankshaft
C
E
A
Width A
Maximum runout C
Big end side clearance D
Big end radial clearance E
Automatic centrifugal clutch
Clutch type
Clutch shoe thickness
Clutch shoe spring free length
Clutch housing inside diameter
Compression spring free length
Primary sheave weight outside diam-
eter
Clutch-in revolution
Clutch-stall revolution
V-belt
V-belt width
Transmission
Transmission type
Primary reduction system
Primary reduction ratio
Secondary reduction system
Secondary reduction ratio
Operation
Single speed automatic
ENGINE SPECIFICATIONS
B
T
1.50 × 2.50 mm (0.06 × 0.10 in)
0.20 ~ 0.70 mm (0.0079 ~ 0.0276 in)
0.060 ~ 0.150 mm (0.0024 ~ 0.0059 in)
C
D
59.75 ~ 59.80 mm (2.352 ~ 2.354 in)
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0.350 ~ 0.850 mm (0.0138 ~ 0.0335 in)
0.010 ~ 0.025 mm (0.0004 ~ 0.0010 in)
Dry, centrifugal automatic
3.3 mm (0.13 in)
31.3 mm (1.23 in)
145.0 mm (5.71 in)
102.4 mm (4.03 in)
20.0 mm (0.79 in)
2,250 ~ 2,850 r/min
3,700 ~ 4,700 r/min
23.0 mm (0.91 in)
V-belt automatic
Helical gear
40/15 (2.666)
Helical gear
40/14 (2.857)
Centrifugal automatic type
2.44 ~ 0.83 : 1
Standard
2 - 9
SPEC
Limit
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0.030 mm
(0.0012 in)
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2.0 mm
(0.08 in)
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145.5 mm
(5.73 in)
90.0 mm
(3.54 in)
19.5 mm
(0.77 in)
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21.0 mm
(0.83 in)
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