1974 Johnson 40 HP Outboard Motors Service manual, Page 50Get this manual
(2) Fractured ring This may be caused by forcing cocked bearing off shaft, or by too heavy press fit(3) Worn, or scuffed surfaces These may be caused by too loose fitor bearing locked by dirt and turning on shaft or in housing (4) Badly discolored rollers and racesThis is usually due to inadequate supply oflubricantModerate discoloration is not cause for discardReplace top crankcase bearing seal using OMC Special Tool (p art No316613)Replace "0" ri ng
Figure 5-18Surfacing Cylinder Head
or flanges are employed and are subject to temperature changesTo check for flatn ess, lay sheet of No120 eme cloth on urface plate or piece of plate glass Place the part to be surfaced on the emery cloth and move slowly back and forth several times in figure motion, exerting evenly distributed, light pr essureSee Figure 5-18Lift part fr om urface plate to observe resultsIf the urface is actually warped or sprung, high