1975 Evinrude 2HP Model 2502 Full Factory Service Manual, Page 37Get this manual
Figure 5-8Removing
Retaining Rings
Figure 5- 9Removing
Wrist Pin
Figure 5-10ilL" Mark on
piston, break the glaze by using fine cylinder honeA few-up anddown motions of the tool in the cylinder should be sufficient to re move
the glazeSee Figure 5-11GASKET SURFACES
Remove all taees of dried cement from gasket surfaces, using trichlorethyleneCheck all gasket faces for flatnessUnder certain conditions, gasket faces may warp or spring, particular ly 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 sever al 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 ar eas will