1976 Johnson 4HP 4R76, 4W76 Outboards Service Repair Manual P/N JM-7603, Page 17Get this manual

1976 Johnson 4HP 4R76, 4W76 Outboards Service Repair Manual P/N JM-7603, Page 17

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LEAF VALVES The leaf valves time the injectionthe {l l11it into the crankcase openil1g 0111y whel1 the preSSUl'e in the crankcase has dl'Opped to pl'edetel'l11ined point the compl'essiol1 stl'okeSee F