Yamaha Star XVS950A 2009, Service Manual

Page: 26 / 402

ENGINE SPECIFICATIONS
2-3
Cylinder head
Volume 40.50–42.70 cm
3
(2.47–2.61 cu.in)
Warpage limit 0.05 mm (0.0020 in)
Camshaft
Drive system Chain drive (left and right)
Camshaft journal diameter 20.959–20.980 mm (0.8252–0.8260 in)
Camshaft lobe dimensions
Intake A 42.470–42.570 mm (1.6720–1.6760 in)
Limit 42.370 mm (1.6681 in)
Intake B 37.041–37.141 mm (1.4583–1.4622 in)
Limit 36.941 mm (1.4544 in)
Exhaust A 42.138–42.238 mm (1.6590–1.6629 in)
Limit 42.038 mm (1.6550 in)
Exhaust B 37.015–37.115 mm (1.4573–1.4612 in)
Limit 36.915 mm (1.4533 in)
Camshaft runout limit 0.030 mm (0.0012 in)
Timing chain
Tensioning system Automatic
Rocker arm/rocker arm shaft
Rocker arm inside diameter 12.000–12.018 mm (0.4724–0.4731 in)
Rocker arm shaft outside diameter 11.981–11.991 mm (0.4717–0.4721 in)
Rocker-arm-to-rocker-arm-shaft clearance 0.009–0.037 mm (0.0004–0.0015 in)
Limit 0.095 mm (0.0037 in)
Valve, valve seat, valve guide
Valve clearance (cold)
Intake 0.08–0.12 mm (0.0032–0.0047 in)
Exhaust 0.22–0.26 mm (0.0087–0.0102 in)
Valve dimensions
Valve head diameter A (intake) 31.40–31.60 mm (1.2362–1.2441 in)
Valve head diameter A (exhaust) 27.90–28.10 mm (1.0984–1.1063 in)