1975 Johnson 4HP 4R75, 4W75 Outboards Service Repair Manual P/N JM-7503, Page 57Get this manual
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JOHNSON 50 TO LUBRICANT We recommend using JOHNSON 50 LUBRICANTJOHNSON 501 LUBRICANT is designed specifically for Johnson outboard motor use at 50 to gasoline to lubricant ratio for engine break in an