"The warning horn should beep
"The warning horn should beep just once when the key is turned to the ON position. The horn itself and the wiring back to the heat warning sensors can be tested simply by having the key in the ON position, then grounding out either of the heat warning sensors at the terminal connection at the cylinder heads.
To actually test the heat warning sensors, that would require the removal of the sensors, heating them via hot water or another source and checking them with a ohm meter.
(VRO Horn Warnings)
(J. Reeves)
1 - A steady constant beep = Overheating - The V/6 engines, possibly some others, have a fuel restriction warning which is also a steady constant beep.
2 - A beep every 20 or 40 seconds = oil level has dropped to 1/4 tank. (Late model engine = Every 40 seconds)
3 - A beep every other second = VRO failure, air leak in oil line, oil restriction, (anything that would result in a lack of oil being supplied to the engine).
NOTE - If the warning horn is the black plastic (overpriced) three wire type horn, the warning horn should beep once when the ignition key is turned to the ON position. If it does not, it is either faulty or someone has disconnected it (a stupid move!). At any rate, if it does not beep which indicates that the horn is non functional, find out why and do not run the engine until the problem is corrected.
When time permits, visit my store at:
http://stores.ebay.com/Evinrude-Johnson-Outboard-Parts-etc?refid=store"
