1969 Evinrude 40 HP Big Twin, Big Twin Electric Lark Service Manual 4596, Page 48Get this manual
TOP SCREWS
CYLINDER TO
_- DRAIN VALVE BOTTOM SCREWS
Figure 5-12Crankcase Screw Locations
Figure 5-11Removing Crankcase Taper Pins dRemove oil drain valve from front half of crankcase for cleaning and inspectionSee Figure 5-12eUsing 5 16 inch, 12 point socket, remove connecting rod screwsRemove rod caps and needle bearingsSee Figure 5-13NOTE: 16 needles are used at each rod bearing
Pistons, connecting rods, bearing retainers, and caps are matched parts and seat with the operation of the motorBecause of this it is essential to maintain their original positions at reassemblyMark each connecting rod and cap, piston, and bearing component to assure correct mating when they are reassembledAlso mark the cylinders from which they are removedfRemove carbon seal from lower end of crankshaft by removing retaining ring with Truarc No.2 pliers (Special Tool303858), then removing other components of seal assembly