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Author Topic:   OMC VRO Disconnect Procedure
jimh posted 04-07-2006 10:51 PM ET (US)   Profile for jimh   Send Email to jimh  
For owners who wish to disable the VRO oil system on their OMC motors, the procedure is very simple. This advice comes via Bill Grannis, an expert on OMC outboard motors:

VRO Disconnect Procedure

Before disconnecting the oiling system, run the engine on a 1:50 oil/gasoline mix for 15 minutes to allow the pre-mix fuel to circulate through the fuel system and into the motor. Shut off motor. Follow the usual precautions against accidental starting when working on the motor.

At the VRO pump, remove the oil line coming from the oil reservoir. Securely cap off the opening at the VRO pump to keep debris and (more importantly water) from entering the system while running.

Disconnect the electrical cable from the oil tank at the motor end and insulate the terminals to prevent a LOW OIL alarm from sounding or indicating.

Disconnect the round rubber Amphenol connector on the VRO pump to prevent the NO OIL alarm from sounding or indicating, and tape up both ends to protect the terminals.

Tell your friend or brother-in law-who borrows the boat that it needs the correct amount of oil in the gas to prevent a catastrophe.

Sharp mechanics will tell you that forgetting or not knowing to add oil to the gas causes more engine failures than any number of "bad" VRO pumps ever did.

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