Yamaha Star XVS13AA(C) 2011, Service Manual

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ENGINE SPECIFICATIONS
2-4
Relief valve operating pressure 391.0–489.0 kPa (3.91–4.89 kgf/cm², 56.7–70.9
psi)
Cooling system
Radiator capacity (including all routes) 2.10 L (2.22 US qt, 1.85 Imp.qt)
Radiator capacity 0.55 L (0.58 US qt, 0.48 Imp.qt)
Coolant reservoir capacity (up to the maximum level
mark) 0.45 L (0.48 US qt, 0.40 Imp.qt)
Radiator cap opening pressure 93.3–122.7 kPa (0.93–1.23 kgf/cm², 13.5–17.8
psi)
Valve relief pressure 4.9 kPa (0.05 kgf/cm², 0.7 psi)
Thermostat
Valve opening temperature 80.5–83.5 °C (176.90–182.30 °F)
Valve full open temperature 95.0 °C (203.00 °F)
Valve lift (full open) 8.0 mm (0.31 in)
Radiator core
Width 197.0 mm (7.76 in)
Height 320.0 mm (12.60 in)
Depth 22.0 mm (0.87 in)
Water pump
Water pump type Single suction centrifugal pump
Reduction ratio 70/45
×
17/26 (1.017)
Impeller shaft tilt limit 0.15 mm (0.006 in)
Spark plug(s)
Manufacturer/model NGK/LMAR7A-9
Spark plug gap 0.8–0.9 mm (0.031–0.035 in)
Cylinder head
Volume 44.20–46.40 cm³ (2.70–2.83 cu.in)
Warpage limit 0.03 mm (0.0012 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 42.988–43.088 mm (1.6924–1.6964 in)
Limit 42.888 mm (1.6885 in)
Intake B 37.045–37.145 mm (1.4585–1.4624 in)
Limit 36.945 mm (1.4545 in)
Exhaust A 43.156–43.256 mm (1.6991–1.7030 in)
Limit 43.056 mm (1.6951 in)
Exhaust B 37.118–37.218 mm (1.4613–1.4653 in)