1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Repair Manual P/N 507947, Page 85Get this manual

1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Repair Manual P/N 507947, Page 85

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Attach vacuum tester to the engine end of oil line and draw in Hg vacuumThe oil system is good if it maintain in Hg vacuu