Re: '87 Evinrude VRO 50 HP Questions
A PTT switch is actually nothing more than a Momentary On SPDT switch, and they don't come close to approaching $50.00. Check with any electronic store.<br /><br />If you're burning up switches, the problem is absolutely not the switch. Obtain a service manual and check out your wiring. <br /><br />Check oil level at the oil reservoir fill hole with the engine in the extreme tilted up position and fill to overflowing.<br /><br />Black/yellow wire to one terminal of kill switch. Other side of kill switch wires to ground.<br /><br />(VRO Pump Conversion To Straight Fuel Pump)<br />(J. Reeves)<br /><br />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 by doing the following:<br /><br />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.<br /><br />2 - Trace the two wires from the oil tank to the engine, disconnect those two wires, then remove them and the oil tank.<br /><br />3 - Mix the 50/1 oil in the proper amount with whatever quanity 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.<br /><br />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.