1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Repair Manual P/N 507947, Page 111Get this manual
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Installation rJ
2 Clean the crankshaft and flywheel tapers with ig Svt and let dryThese surfaces must clean and dry to allow locking of the tapersAlign the flywheel keyway and install flywheelCo