Bombardier SeaDoo 1990 factory shop manual, Page 51Get this manual
Section 03 ENGINE Sub-section (BOTTOM )
INSPECTION
Visually inspect parts for corrosion damageInspect plane surfaces for warpageSmall deformation can be corrected by grinding surface with fine sand paperInstall sand paper on surface plate and rub part against oiled sand paper Inspect crankshiaft bearings Check for scoring, pitting, chipping or other evidence of wear Make sure plastic cage is not meltedRotate and make sure they turn smoothlyIf crankshaft andlor components are found defective, it must be repaired by specialized shop or renewed The inspection of engine bottom end shoulld include the following measurements-
Or, use bearing extractor such as Proto #4032 and press to remove two bearings at time
TOLERANCES
MEASUREMENTS
Crankshaft Deflection Connecting Rod Big End Axial Play