Yamaha XF50W Service Manual page 25

Item
Valve stem to valve guide clearance
Intake
Exhaust
Valve stem runout
^
/ / / / / / / / / / / / / / / / / / / / /
Valve seat width
Intake
Exhaust
ENGINE SPECIFICATIONS
%
w?.
2-6
Standard
0.010~0.037mm
(0.0004~0.0015in)
0.025~0.052mm
(0.0010~0.0020in)
...
0.9~1.1mm
(0.0354~0.0433in)
0.9~1.1mm
(0.0354~0.0433in)
SPEC 0 *
Limit
0.080mm
(0.0031in)
0.100mm
(0.0039in)
0.010mm
(0.0004in)
1.6mm
(0.0630in)
1.6mm
(0.0630in)