2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 109Get this manual
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Power unit Crankshaft journal diameter a: 47.98548.000 mm (1.88921.8898 in) Crankpin diameter b: 43.98244.000 mm (1.73161.7323 in) Crankpin width c: 21.0021.07 mm (0.82680.8295 in) 2 Measure the crank