1978 Johnson 2HP outboards Service Manual, Page 33Get this manual
4-8 dCheck crankshaft and flywheel tapers for any traces of oilThis assembly must be perfectly dryswab tapered surfaces with solvent and blow dry with compressed airInspect both tapers for burrs or nicksNOTE DO NOT permit solvent used to clean tapers to wash oil out of oiler wickARMATURE PLATE
Figure 4-19Checking Timing with Engine Running
eReplace flywheel but do not torque nutCheck for spark by connecting the spark plug high tension lead to spark checker (Stevens Experimental CoPart #S-21 or S-31)spark gap set at 14" (6 mm), and cranking the engine with ropeIf spark jumps gap, tighten wheel nut to torque speCified in Section 2fConnect the high tension lead wire to the spark plugMake sure that the terminal in the spark plug lead cover makes firm contact with the spark plug terminalSee Figure 4-2