1974 Johnson 40 HP Outboard Motors Service manual, Page 48Get this manual
hReinstall matched caps on connecting rods and remove pistons and rods from cylindersiRemove the rings from the pistons by prying the ends loose enough to grip them with pliers and then breaking them away from the pistonDO NOT try to save the ings Install complete set of new ings on every power head ser vice jobj If necessary to remove connecting rods from pistons, remove wrist pin retaining ringsusing Truarc No pliers (Special Tool Jl303857)See Figure 5-14 Drive wrist pin through to free piston from connecting rodSee Figure 5-1 5Figure 5-11Connecting Rod Caps and Screws eRemove connecting od caps and 16 needle bear ingsSee Figure 5- 11Pistons, connecting rods and caps are matched parts nd seat with the operation of the motorBecause of this, it is essential to maintain their original positions at reassemblyMark each connecting od and cap, piston, and bearing component to assure correct mating when they reassembledAlso mark the cylinders rom which they are removed NOTE