1979 Evinrude 4 HP Outboards Service Repair Manual, PN 5424, Page 70Get this manual
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DISASSEMBLY OF GEARCASE aRemove propellerbRemove the water pump screws and lift pump and driveshaft from gearcaseRemove water tube grommet from pumpSee Figure 6-4cDrain lubricant from gearcasedDisasse