2007 Johnson 2 HP 4-Stroke Service Manual, Page 100Get this manual
POWERHEAD CYLINDERCRANKCASEPISTON Install the oil pump shaftApply engine oil to the crankcase bearing, the crankshaft lower oil seal and the driveshaft oil seal
1Oil pump shaft
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Crankcase to Cylinder
Clean the mating surfaces of the cylinder block and the crankcaseInstall the two dowel pins and gasketInstall the thrust washer on crankshaft