1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 203Get this manual
POWER UNIT 6-60 CRANKSHAFT TO CYLINDER Install crankshaft main bearings in cylinder and crankcaseApply engine oil to bearings Assemble each bearing to its original position Assemble main bearing half containing oil groovehole to cylinder blockAssemble the half without oil groove to crankcase Do not apply oil between crank bearing holder and crank main bearing NOTE: Align bearing tab with notch in cylinder and crankcase