1975 Johnson 4HP 4R75, 4W75 Outboards Service Manual, Page 44Get this manual
eTighten connecting rod screws to torque as specified in Section 2Check movement at connecting rods on crank pinRods should float freely after torquingBend lock plate tabs up to prevent screws from turning r:: "I NOTE
DO NOT adjust pOSition of screw if tab does not fit against flat on screwLock plate tab must be made to conform to screwAlways use new lock plates
Figure 5-19Connecting Rod Cap Alignment PISTON RINGS Install the piston rings on each pistonSpread each ring with ring expander just enough to slip it over the head of the piston and down into placeBe sure the rings fit freely in the piston ring groovesThe ring grooves are pinned to secure the position of the rings, primarily to prevent ends of the rings from catching on the edges of the ports in the cylinders, but also to assure staggering of the ring gaps