1993 Johnson Evinrude "ET" 60 degrees LV Service Manual, P/N 508286, Page 54Get this manual
Vacuum Switch Servicing Function Test 1All electrical connections should be complete and the engine's battery must be connected
r,v 2Remove the vacuum switch hose from the fuel separation
chamberConnect vacuum tester to the hose
i spark plug leads
"" Avoid accidental starting of engine; twist and remove all
3Turn key switch to ON position4Slowly draw vacuum on the vacuum switch hoseThe warning horn should sound continuously as the vacuum approaches the switch's preset limitRefer to the chart below for your engine's limit
Switch PIN 433409
Limit (inHg)
PCE0063
5If the horn does not sound, check the warning horn circuitRefer to Warning Horn Test, Section If warning horn circuit is okay, replace vacuum switchRefer to Fuel Component Bracket Servicing
Oil Supply System
Optional Equipment