1979 Johnson 2HP Outboards Service Manual, Page 38Get this manual
Figure 5-8Removing Retaining Rings
Figure 5-9RenlOving Wrist Pin
Figure 5-10"L" Mark PiStOll
piston, break the glaze using fine cylinder honeUse low rpm drill with rapid and down movement to obtain good crosshatch pattern for good oil retentionUse hone with medium stone (220 grit)See Figure 5-11MEDIUM STONE
GASKET SURFACES Remove all taces of dried cement from gasket surfaces, using trichlorethyleneCheck all gasket faces for flatnessUnder certain ditions, gasket faces warp or spring, particularly where thin sections or flanges are employed and are subject to temperature changescheck for flatness, sheet of No120 emery cloth surface plate or piece of plate glassthe part to surfaced the emery cloth and move slowly back and forth several times in figure motion, exerting light, evenly distributed pressureIf the surface is actually warped or sprung, high spots making contact with the surface plate will take dull polish, while the 10w areas will have retained their original stateinsure flatness over the entire surface, continue surfacing until the entire gasket surface has polished to dull lusterFinish surfacing with No180 emery clothSee Figure -12