1976 Evinrude 4 HP Service Repair Manual Models P/N 506721, Page 17Get this manual

1976 Evinrude 4 HP Service Repair Manual Models P/N 506721, Page 17

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LEAF VALVES The leaf valves time the injection of the fuel mixture into the crankcase opening only when the pressure in the crankcase has dropped to predetermined point the compression strokeSee Figur

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