evinrude outboard

guys.when i put muffs on my 70 hp 3 cyc after abot 5 min or less i get intermitent buzzing at the controls .anybody know what this means.

Your overheat warning buzzer is going off.
The horn is in the control box.
There isn't enough water getting where it should.

engine isn,t not to touch,water coming out of pee hole

Intermittant buzzer may be the no oil warning.----------Mix gas and oil if you are going to run it some more.---------------Time to have a look at the VRO system.-------Is VRO in service ? ---What is the model # of the motor ?

vro disconnected .model n0 is ve70tlets .

vro not in service ,mod el no ve7otlets

Check to see that everything is disconnected as it should be as follows.

(VRO Pump Conversion To Straight Fuel Pump)
(J. Reeves)

You can convert the VRO pump into a straight fuel pump, eliminating the oil tank and VRO pump warning system, but retain the overheat warning setup (and fuel restriction warning if so equipped) by doing the following:

1 - Cut and plug the oil line at the engine so that the oil side of the VRO pump will not draw air into its system. Trace the wires from the back of the VRO to its rubber plug (electrical plug) and disconnect it.

2 - Trace the two wires from the oil tank to the engine, disconnect those two wires, then remove them and the oil tank.

3 - Mix the 50/1 oil in the proper amount with whatever quantity fuel you have. Disconnect the fuel line at the engine.

Pump the fuel primer bulb until fuel exits that hose with the tint of whatever oil you used. Reconnect the fuel hose.

That's it. If you want to test the heat warning system to ease your mind, have the key in the on position, then ground out the tan heat sensor wire that you'll find protruding from the cylinder head. The warning horn should sound off.

And here's a list of the warnings you might receive.


(VRO Horn Warnings)
(J. Reeves)

NOTE: I retired around 1991/92. Possibly some of the later V4 engines and others may also incorporate a fuel vacuum switch that would enable a fuel restriction warning to sound as mentioned below, an unknown factor to myself.

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.

hi joe.i disconnected the vro this pass month.pretty sure i done what you said,beebing i am getting is no 2 on your list every 20 t030 secs.

Did you disconnect oil tank warning circuit ?

is this plug fm tank to motor

Error, disregard.

never had pump disconnected ,thank you .