Yamaha Fascino S 2021 Supplementary Service Manual page 18

MAINTENANCE SPECIFICATIONS (ENGINE)
Valve, valve seat, valve guide
Valve clearance (cold)
Intake
Exhaust
Valve dimensions
Valve seat contact width limit (intake)
Valve seat contact width limit (exhaust)
Valve stem diameter limit (intake)
Valve stem diameter limit (exhaust)
Valve guide inside diameter (intake)
Valve guide inside diameter (exhaust)
Valve-stem-to-valve-guide clearance limit
(intake)
Valve-stem-to-valve-guide clearance limit
(exhaust)
Valve stem runout
Valve spring
Free length limit (intake)
Free length limit (exhaust)
Cylinder
Bore
Wear limit
Piston
Diameter
Measuring point (from piston skirt bottom)
Piston-to-cylinder clearance
Piston pin bore inside diameter limit
Piston pin outside diameter limit
Piston ring
Top ring
End gap limit
Side clearance limit
2nd ring
End gap limit
Side clearance limit
Crankshaft
Crank assembly width
Runout limit
Clutch
Clutch type
0.06–0.10 mm (0.0024–0.0039 in)
0.22–0.26 mm (0.0087–0.0102 in)
1.4 mm (0.06 in)
1.7 mm (0.07 in)
4.945 mm (0.1947 in)
4.930 mm (0.1941 in)
5.000–5.012 mm (0.1969–0.1973 in)
5.000–5.012 mm (0.1969–0.1973 in)
0.080 mm (0.0032 in)
0.100 mm (0.0039 in)
0.020 mm (0.0008 in)
35.30 mm (1.39 in)
35.30 mm (1.39 in)
52.400–52.423 mm (2.0630–2.0639 in)
52.473 mm (2.0659 in)
52.377–52.400 mm (2.0621–2.0630 in)
5.0 mm (0.20 in)
0.016–0.030 mm (0.0006–0.0012 in)
13.043 mm (0.5135 in)
12.976 mm (0.5109 in)
0.42 mm (0.0165 in)
0.120 mm (0.0047 in)
0.67 mm (0.0264 in)
0.120 mm (0.0047 in)
43.95–44.00 mm (1.730–1.732 in)
0.030 mm (0.0012 in)
Dry, centrifugal, shoe
2-3
SPEC