1968 Evinrude Ski-Twin, Ski-Twin Electric 33 HP Outboards Service Manual, Page 42Get this manual
DISASSEMBL OF POWER HEAD Remove lifting bracket, cylinder head and cylinder head gasketRemove by-pass covers and gaskets, and inner and outer exhaust covers and gasketsSee Figure 5- 6NOTE
If pitting exists the inner exhaust plate, certain to install new plate upon reassembly
Loosen clamps and remove crankcase
return hose from
Drive out taper pins from back to front of crankcaseSee Figure 5-7Remove eight small and six large screws attaching crankcase to cylinder blockSee Figure 5-8top side of crankshait with rawhide mallet to break seal between crankcase and cylinderLift crankcase from cylinder blockFigure 5-8Crankcase Screw Locations drain valve from crankcase for dRemove cleaning and inspectionSee Figure 5-8