Engine Specifications - Yamaha 2009 YFM25RY Service Manual

EAS29120

ENGINE SPECIFICATIONS

Cylinder head
Volume
Warpage limit
Cylinder
Bore
Wear limit
Camshaft
Drive system
Camshaft lobe dimensions
Intake A
Limit
Intake B
Limit
Exhaust A
Limit
Exhaust B
Limit
Camshaft runout limit
Timing chain
Model/number of links
Tensioning system
Rocker arm/rocker arm shaft
Rocker arm inside diameter
Limit
Rocker arm shaft outside diameter
Limit
Rocker-arm-to-rocker-arm-shaft clearance
ENGINE SPECIFICATIONS
3
20.50–21.50 cm (1.25–1.31 cu.in)
0.05 mm (0.0020 in)
74.000–74.016 mm (2.9134–2.9140 in)
74.100 mm (2.9173 in)
Chain drive (right)
36.890–36.990 mm (1.4524–1.4563 in)
36.790 mm (1.4484 in)
30.111–30.211 mm (1.1855–1.1894 in)
30.011 mm (1.1815 in)
36.891–36.991 mm (1.4524–1.4563 in)
36.791 mm (1.4485 in)
30.092–30.192 mm (1.1847–1.1887 in)
29.992 mm (1.1808 in)
0.030 mm (0.0012 in)
DID SCR-0404 SV/104
Automatic
12.000–12.018 mm (0.4724–0.4731 in)
12.036 mm (0.4739 in)
11.981–11.991 mm (0.4717–0.4721 in)
11.950 mm (0.4705 in)
0.009–0.037 mm (0.0004–0.0015 in)
2-4