1976 Johnson 2HP 2R76 Outboard Motor Service Manual, Page 38Get this manual
Figure 5-8Removing Retaining Rings
Figure 5-9Removing Wrist Pin
Figure 5-10"L" Mark on Piston
piston, break the glaze by using fine cylinder honeA few up and down motions of the tool in the cylinder should be sufficient to remove the glazeSee Figure 5-11GASKET SURFACES Remove all taces of dried cement from gasket surfaces, using trichlorethyleneCheck all gasket faces for flatnessUnder certain conditions, gasket faces may warp or spring, particularly where thin sections or flanges are employed and are subject to temperature changesTo check for flatness, lay sheet of No120 emery cloth on surface plate or piece of plate glassPlace the part to be surfaced on 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 on dull polish, while the low areas will have retained their original stateTo insure flatness over the entire surface, continue surfacing until the entire gasket surface has been polished to dull lusterFinish surfacing with No180 emery clothSee Figure 5-12