1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, Service Repair Manual P/N 507875, Page 93Get this manual
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Vacuum Switch ServicingV4 Comm V6, Models Functional Test
5V2 11212
5 If the horn does not sound, check the warning horn circuitRefer to Warning Horn Test, Section If warning horn c