Yamaha XF50W Service Manual page 29

Rocker arm/rocker arm shaft
Rocker arm inside diameter
Rocker arm shaft outside diameter
Arm-to-shaft clearance
Connecting rod
Connecting rod length
Small end inside diameter
Crankshaft
Width A
Maximum runout C
Big end side clearance D
Big end radial clearance E
ENGINE SPECIFICATIONS
Item
1^
Standard
10.000~10.015mm
(0.3937~0.3943in)
9.981~9.991mm
(0.3930~0.3933in)
0.009~0.034mm
(0.0004~0.0013in)
79.95~80.05mm
(3.1476~3.1516in)
10.015~10.028mm
(0.3943~0.3948in)
42.45~42.50mm
(1.671~1.673in)
...
0.15~0.45mm
(0.006~0.018in)
0~0.010mm
(0~0.0004in)
2-10
SPEC 0 *
Limit
10.030mm
(0.3949in)
9.950mm
(0.3917in)
...
...
...
...
0.03mm
(0.0012in)
1.00mm
(0.0394in)
...