1990 Johnson Evinrude "ES" Cross V 88 thru 115, 150 thru 175, P/N 507874, Page 32Get this manual
Warning Horn Test
INote To avoid possible powerhead damage, be sure the warning
Remote Control: Non Models
horn is in operating conditionIt is advisable to check the horn at the start of each boating season and periodically during the season
switch to the ON position and inserting another key or thin piece of metal into the slot in the controlThe horn should soundIf the horn does not sound, check the horn and the complete system
g check of the warning horn can be made by turning the key