VRO - 3 vs 4 Wire Questions

Did a search on VRO pumps, and learned a lot, but still have some questions.<br /><br />What year did OMC change the VRO pumps from 3 to 4 wire?<br /><br />If you currently have a 3 wire, how does the 4 wire plug fit into what ever it plugs into? Is there some sort of conversion kit or does the 4th wire not run through the plug? Hope that made sense!<br /><br />Can the 4 wire pump be rebuilt if it should fail or do you have to buy a whole new pump again?<br /><br />As always, thanks for the input.<br /><br />Cheers,<br /><br />Brew

Re: VRO - 3 vs 4 Wire Questions

The change from 3 to four wire pump was about 1992,<br /><br />If you give us the model number, we can give you the correct kit number to convert your engine over to the 4 wire setup.<br /><br />All the new pumps are completely repairable.

Re: VRO - 3 vs 4 Wire Questions

Thanks Seahorse.<br /><br />Not sure of model number as I'm at work, but it is an 1986 Evinrude 140.<br /><br />Any advice on the proper 4 wire kit would be appreciated.<br /><br />Cheers,<br /><br />Brew

Re: VRO - 3 vs 4 Wire Questions

The original pump number was 174304 that is superceded up to #5004559 for about $269. It should contain all the parts needed to update your system.<br /><br />If you have the original tank, pull out the pickup and check the filter. IF it is the old style cone shaped one or if it has a "wad" of foam around it, remove them all and install a late modely "tea-bag" filter that all newer motors now use. If you have the smooth vinyl oil line that is brittle and hard, replace it with the factory 1/4" rubber line and connect it directly from the primer bulb to the VRO inlet fitting. Get rid of any other connections. Use a service manual to test the pumping action and the alarm system.