Yamaha MBK MW125 2014 Service Manual page 32

Spark plug(s)
Manufacturer/model
Spark plug gap
Cylinder head
Warpage limit
Camshaft
Drive system
Camshaft lobe dimensions
Lobe height (Intake)
Limit
Base circle diameter (Intake)
Lobe height (Exhaust)
Limit
Base circle diameter (Exhaust)
Camshaft runout limit
Rocker arm/rocker arm shaft
Rocker arm inside diameter
Limit
Rocker arm shaft outside diameter
Limit
Rocker-arm-to-rocker-arm-shaft clearance
Limit
Valve, valve seat, valve guide
Valve clearance (cold)
Intake
Exhaust
Valve dimensions
Valve head diameter (intake)
Valve head diameter (exhaust)
Valve seat contact width (intake)
Limit
Valve seat contact width (exhaust)
Limit
Valve stem diameter (intake)
Limit
Valve stem diameter (exhaust)
Limit
Valve guide inside diameter (intake)
Limit
Valve guide inside diameter (exhaust)
Limit
Valve-stem-to-valve-guide clearance (intake)
Limit
Valve-stem-to-valve-guide clearance (exhaust)
Limit
Valve stem runout
ENGINE SPECIFICATIONS
NGK/CR7E
0.7–0.8 mm (0.028–0.031 in)
0.05 mm (0.0020 in)
Chain drive (left)
30.757–30.857 mm (1.2109–1.2148 in)
30.657 mm (1.2070 in)
26.550–26.650 mm (1.0453–1.0492 in)
30.790–30.890 mm (1.2122–1.2161 in)
30.690 mm (1.2083 in)
26.631–26.731 mm (1.0485–1.0524 in)
0.030 mm (0.0012 in)
9.985–10.000 mm (0.3931–0.3937 in)
10.015 mm (0.3943 in)
9.966–9.976 mm (0.3924–0.3928 in)
9.936 mm (0.3912 in)
0.009–0.034 mm (0.0004–0.0013 in)
0.080 mm (0.0032 in)
0.08–0.12 mm (0.0032–0.0047 in)
0.16–0.20 mm (0.0063–0.0079 in)
25.90–26.10 mm (1.0197–1.0276 in)
21.90–22.10 mm (0.8622–0.8701 in)
0.90–1.20 mm (0.0354–0.0472 in)
1.6 mm (0.06 in)
0.90–1.20 mm (0.0354–0.0472 in)
1.6 mm (0.06 in)
4.975–4.990 mm (0.1959–0.1965 in)
4.920 mm (0.1937 in)
4.960–4.975 mm (0.1953–0.1959 in)
4.925 mm (0.1939 in)
5.000–5.012 mm (0.1969–0.1973 in)
5.050 mm (0.1988 in)
5.000–5.012 mm (0.1969–0.1973 in)
5.050 mm (0.1988 in)
0.010–0.037 mm (0.0004–0.0015 in)
0.080 mm (0.0032 in)
0.025–0.052 mm (0.0010–0.0020 in)
0.110 mm (0.0043 in)
0.010 mm (0.0004 in)
2-3