1983 Johnson/Evinrude 2 thru V-6 outboards Service Repair Manual P/N 393765, Page 121Get this manual

1983 Johnson/Evinrude 2 thru V-6 outboards Service Repair Manual P/N 393765, Page 121

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The vacuum reading must be no more than 140 mm (5-12 inches) of mercury for V-4 models, or 177,8 mm (7 inches) of mercury for V-6 modelsThis test on Iy checks the boat's fuel system for restrictions a