1979 Evinrude 4 HP Outboards Service Repair Manual, PN 5424, Page 24Get this manual

1979 Evinrude 4 HP Outboards Service Repair Manual, PN 5424, Page 24

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LEAF VALVES aInspect the leaf valve assembly and disassemble if necessaryThe leaf valves must be free from all varnish and gum, and the leaves must be perfectly flat and without distortion so that the