1979 6 HP Johnson Outboard Repair and Service Repair Manual PN JM-7904, Page 19Get this manual

1979 6 HP Johnson Outboard Repair and Service Repair Manual PN JM-7904, Page 19

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