Yamaha MT-03 Service Manual page 30

Valves, valve seats, valve guides
Valve clearance (cold)
Intake
Exhaust
Valve dimensions
Valve head diameter A (intake)
Valve head diameter A (exhaust)
Valve face width B (intake)
Valve face width B (exhaust)
Valve seat width C (intake)
Limit
Valve seat width C (exhaust)
Limit
Valve margin thickness D (intake)
Valve margin thickness D (exhaust)
Valve stem diameter (intake)
Limit
Valve stem diameter (exhaust)
Limit
Valve guide inside diameter (intake)
Limit
Valve guide inside diameter (exhaust)
A
B
C
D
ENGINE SPECIFICATIONS
0.09-0.13 mm (0.0035-0.0051 in)
0.16-0.20 mm (0.0063-0.0079 in)
37.90-38.10 mm (1.4921-1.5000 in)
31.90-32.10 mm (1.2559-1.2638 in)
1.910-2.620 mm (0.075-0.103 in)
1.910-2.620 mm (0.075-0.103 in)
1.00-1.20 mm (0.0394-0.0472 in)
1.6 mm (0.06 in)
1.00-1.20 mm (0.0394-0.0472 in)
1.6 mm (0.06 in)
0.80-1.20 mm (0.0315-0.0472 in)
0.80-1.20 mm (0.0315-0.0472 in)
5.975-5.990 mm (0.2352-0.2358 in)
5.945 mm (0.2341 in)
5.960-5.975 mm (0.2346-0.2352 in)
5.930 mm (0.2335 in)
6.000-6.012 mm (0.2362-0.2367 in)
6.05 mm (0.2382 in)
6.000-6.012 mm (0.2362-0.2367 in)
2-5