1970 Johnson 1.5 HP 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 Hone
piston, the glaze using fine cylinder honefew and down motions of the tool in the cylinder should sufficient to remove the glazeSee Figure 5-11GASKET SURFACES Remove taces of dried cement from gasket surfaces, using trichlorethyleneCheck gasket faces for flatnessUnder certain conditions, gasket faces warp spring, particularly where thin sections flanges employed and subject to temperature changescheck for flatness, lay sheet of No120 cloth surface plate piece of plate glassPlace the part to surfaced the cloth and move slowly back and forth several times in figure motion, exerting light, evenly distributed pressureIf the surface is actually warped sprung, high spots making contact with the surface plate will take dull polish, while the low areas will have retained their original stateinsure flatness over the entire surface, continue surfacing until the entire gasket surface has been polished to dull lusterFinish surfacing with No180 clothSee Figure 5-12