1979 Evinrude Outboard 55 HP Service Repair Manual Item No. 5428, Page 14Get this manual
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If the proper tube or filler type
1 part Lubricant to 50 parts Gasoline Gal(22.7 litres) Tank: pint (0.47 litre) lubricant to gallons (22.7 litres) of gasoline
IPORTANT:
PUMP