1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 131Get this manual

1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 131

Blocking Diode
If S.L.O.Wis activated when warning horn receives no oil, low oil, or fuel vacuum signal, test engine harness blocking diode1Disconnect engine harness red connector2Disconnect port and starboard temperature switch tan leads
rv 3Calibrate ohmmeter on Rx100 scale pin Note readingand connect between either tan lead and engine harness tan

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