Yamaha YP400T Service Manual page 37

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Table of Contents

Timing chain

Model/number of links

Tensioning system

Valves, valve seats, valve guides

Valve clearance (cold)

Valve dimensions

Head Diameter

Valve head diameter A

Valve face width B

Valve seat width C

Valve margin thickness D

Valve stem diameter

Valve guide inside diameter

Valve-stem-to-valve-guide clearance

ENGINE SPECIFICATIONS

DID SCR-0409 SV/136LE

0.15 ~ 0.20 mm (0.0059 ~ 0.0079 in)

0.25 ~ 0.30 mm (0.0098 ~ 0.0118 in)

30.9 ~ 31.1 mm (1.2165 ~ 1.2244 in)

27.9 ~ 28.1 mm (1.0984 ~ 1.1063 in)

1.838 ~ 2.687 mm (0.0724 ~ 0.1058 in)

1.697 ~ 2.828 mm (0.0668 ~ 0.1113 in)

1.0 ~ 1.2 mm (0.0394 ~ 0.0472 in)

0.85 ~ 1.15 mm (0.0335 ~ 0.0453 in)

4.975 ~ 4.990 mm (0.1959 ~ 0.1965 in)

4.960 ~ 4.975 mm (0.1953 ~ 0.1959 in)

5.000 ~ 5.012 mm (0.1969 ~ 0.1973 in)

0.010 ~ 0.037 mm (0.0004 ~ 0.0015 in)

0.025 ~ 0.052 mm (0.0010 ~ 0.0020 in)

Margin Thickness

Troubleshooting