1972 Johnson 2HP Outboard Motor Service Manual, Page 35Get this manual
Figure 5-9Removing Wrist Pin
Figure 5-10"L" Mark Piston
Figure 5-11De-Glazing Cylinder Wall With
piston, break the glaze using fine cylinder honefew and sufficient to remove down motions of the tool in the cylinder should the glazeSee Figure 5-11GASKET SURFACES Remove taces of dried cement from gasket surfaces, using trichlorethyleneCheck gasket faces for flatnessUnder certain ditions, gasket faces warp or spring, particularly where thin tions 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 5-12