Maintenance Specifications; Engine - Yamaha YFM250XL(C) Service Manual

MAINTENANCE SPECIFICATIONS

ENGINE

Cylinder head:
Warp limit
2
Measuring point
Cylinder:
Bore size
Measuring point
Camshaft:
Drive method
Cam cap inside diameter
Camshaft outside diameter
Shaft-to-cap clearance
Cam dimensions
Intake
Exhaust
MAINTENANCE SPECIFICATIONS
Item
*
*
C
B
"A"
"B"
"C"
"A"
"B"
Standard
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Lines indicate straight edge
measurement.
70.97 ~ 71.02 mm (2.794 ~ 2.796 in) 71.10 mm
40 mm (1.6 in)
Chain drive (Left)
25.000 ~ 25.033 mm
(0.9843 ~ 0.9855 in)
24.96 ~ 24.98 mm
(0.9827 ~ 0.9835 in)
0.020 ~ 0.073 mm
(0.0008 ~ 0.0029 in)
A
36.537 ~ 36.637 mm
(1.438 ~ 1.442 in)
30.131 ~ 30.231 mm
(1.186 ~ 1.190 in)
6.527 ~ 6.647 mm
(0.257 ~ 0.262 in)
36.582 ~ 36.682 mm
(1.440 ~ 1.444 in)
30.252 ~ 30.352 mm
(1.191 ~ 1.195 in)
2 - 4
SPEC
Limit
0.10 mm
(0.004 in)
(2.799 in)
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----
----
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36.437 mm
(1.435 in)
30.031 mm
(1.182 in)
----
36.482 mm
(1.436 in)
30.152 mm
(1.187 in)