2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 109Get this manual
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) 2Measure the crankshaft runoutReplace the crankshaft if above specification
Checking the connecting rod big end side clearance
1Measure the connecting rod big end side clearance aReplace the connecting rod or crankshaft or both if out of specification
Connecting rod big end side clearance a: 0.140.28 mm (0.00550.0110 in)