Yamaha WR450FB 2012, Руководство по эксплуатации для владельца

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ENGINE SPECIFICATIONS
2-5
Spring tilt (intake) 2.5 °/1.7 mm (2.5 °/0.07 in)
Spring tilt (exhaust) 2.5 °/1.6 mm (2.5 °/0.06 in)
Winding direction (intake) Clockwise
Winding direction (exhaust) Clockwise
Cylinder
Bore 95.000–95.010 mm (3.7402–3.7405 in)
Taper limit 0.050 mm (0.0020 in)
Out of round limit 0.050 mm (0.0020 in)
Piston
Piston-to-cylinder clearance 0.020–0.045 mm (0.0008–0.0018 in)
Limit 0.15 mm (0.006 in)
Diameter D 94.965–94.980 mm (3.7388–3.7394 in)
Height H 8.0 mm (0.31 in)
Offset 1.00 mm (0.0394 in)
Offset direction Intake side
Piston pin bore inside diameter 18.004–18.015 mm (0.7088–0.7093 in)
Limit 18.045 mm (0.7104 in)
Piston pin outside diameter 17.991–18.000 mm (0.7083–0.7087 in)
Limit 17.971 mm (0.7075 in)
Piston-pin-to-piston-pin-bore clearance 0.004–0.024 mm (0.00016–0.00094 in)
Piston ring
Top ring
Ring type
Barrel
Dimensions (B
u
T) 1.20
u
3.50 mm (0.05 u 0.14 in)
End gap (installed) 0.20–0.30 mm (0.0079–0.0118 in)
Limit 0.55 mm (0.0217 in)
Ring side clearance 0.030–0.065 mm (0.0012–0.0026 in)
Limit 0.115 mm (0.0045 in)
2nd ring
Ring type
Taper
Dimensions (B
u
T) 1.00
u
3.35 mm (0.04
u
0.13 in)
H
D
T
B
B
T