Yamaha VX110 Sport, Service Manual

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2-4
E
SPEC
MAINTENANCE SPECIFICATIONS
Valve face width B
Intake mm (in) 1.91–2.64 (0.0752–0.1039)
Exhaust mm (in) 1.91–2.64 (0.0752–0.1039)
Valve seat width C
Intake mm (in) 0.90–1.10 (0.0354–0.0433)
Exhaust mm (in) 0.90–1.10 (0.0354–0.0433)
Valve margin thickness D
Intake mm (in) 0.85–1.15 (0.0335–0.0453)
Exhaust mm (in) 0.85–1.15 (0.0335–0.0453)
Valve stem diameter
Intake mm (in) 3.975–3.990 (0.1565–0.1571)
Exhaust mm (in) 4.465–4.480 (0.1758–0.1764)
Valve guide inside diameter
Intake mm (in) 4.000–4.012 (0.1575–0.1580)
Exhaust mm (in) 4.500–4.512 (0.1772–0.1776)
Valve-stem-to-valve-guide
clearance
Intake mm (in) 0.010–0.037 (0.0004–0.0015)
Exhaust mm (in) 0.020–0.047 (0.0008–0.0019)
Valve stem runout mm (in) 0.01 (0.0004)
Valve spring
Free length
Intake mm (in) 38.90 (1.53)
Exhaust mm (in) 40.67 (1.60)
Installed length
Intake mm (in) 34.50 (1.36)
Exhaust mm (in) 35.00 (1.38)
Tilt limit
Intake Degree/mm (in) 2.5/1.7 (0.067)
Exhaust Degree/mm (in) 2.5/1.8 (0.071)
Piston
Piston-to-cylinder clearance mm (in) 0.10–0.11 (0.0039–0.0043)
Piston diameter mm (in) 75.895–75.910 (2.9880–2.9886)
Measuring point H* mm (in) 5 (0.2)
Wear limit mm (in) 0.170 (0.0067)
Piston pin boss inside diameter mm (in) 17.002–17.013 (0.6694–0.6698)
Item Unit
Model
VX110 Sport VX110 Deluxe