Checking The Crankshaft; Checking The Crankpin Oil Clearance - Yamaha F80BETL Service Manual

Connecting rod big end side
clearance a:
0.14–0.28 mm (0.0055–0.0110 in)

Checking the crankshaft

1. Measure the crankshaft journal diameter
a, crankpin diameter b, and crankpin
width c. Replace the crankshaft if out of
specification.
6D93G11
Crankshaft journal diameter a:
47.985–48.000 mm
(1.8892–1.8898 in)
Crankpin diameter b:
43.982–44.000 mm
(1.7316–1.7323 in)
Crankpin width c:
21.00–21.07 mm
(0.8268–0.8295 in)
2. Measure the crankshaft runout. Replace
the crankshaft if above specification.
Crankshaft runout limit:
0.03 mm (0.0012 in)

Checking the crankpin oil clearance

1. Clean the bearings and the connecting
rod.
Cylinder block
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