Yamaha F150A, Service Manual, Page: 37 / 493

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Power unit technical data
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A
Piston ring (Oil)
Dimension height (B) 2.400–2.470 mm (0.0945–0.0972 in)
Dimension width (T) 2.300–2.700 mm (0.0906–0.1063 in)
End gap (reference data) 0.15–0.60 mm (0.0059–0.0236 in)
Side clearance 0.04–0.13 mm (0.0016–0.0051 in)
Connecting rod
Small end inside diameter 21.022–21.037 mm (0.8276–0.8282 in)
Big end inside diameter 53.025–53.045 mm (2.0876–2.0884 in)
Big end side clearance 0.14–0.31 mm (0.006–0.012 in)
Big end oil clearance 0.030–0.057 mm (0.0012–0.0022 in)
Crankshaft
Journal diameter 51.980–52.000 mm (2.0465–2.0472 in)
Crankpin diameter 49.980–50.000 mm (1.9677–1.9685 in)
Runout 0.03 mm (0.0012 in)
Crankpin width 22.000–22.100 mm (0.8661–0.8701 in)
Journal oil clearance 0.021–0.046 mm (0.0008–0.0018 in)