Re: vro replacement questions
Sorry for the confusion guys. This is my first time posting to this forum and tried to delete the first post but couldn't. With that said I have had so much conflicting advise. Everything from not being able to do anything but replace the entire VRo pump even though I don't use the oil side to replace with a "regular" pump at a much lower cost. This is the first I have heard that I would need two pumps. With that option though I have been told there is a mounting problem. I have been told the the fuel side is bad because after 4500 rpm the moter dies and will not run unless the primer bulb is constantly pumped. The fuel lines have been repalced from tank to motor and the water seperator shows no problems. Ther does seem to be excessive fuel , not much though, around the air filter at the carbaurators. To clarify the engine...the model number is JS135VXSIF. I bought it used and always thougt it was a 2000. While pretty handy I am new to the outboard motor. You help is appreciated.
JS135VXSIF: "SI" = 01. It's a 2001.
To reiterate the 4 options mentioned so far:
(opt 1) As I mentioned, I "believe" (but am not 100% sure) that you might be able to rebuild the "fuel side" of your VRO/OMS pump. The oil side can't be rebuilt, but you're not using that anyway. I've heard the parts are readily available and it's easy to do.
(opt 2 and 3) If you're actually going to replace the fuel pump with a brand new VRO (now known as OMS) fuel pump, there are only 4 current P/N's for VRO/OMS pumps, and there's a long list of supercedes for each. The current P/N's are
5007423 - for 3 wire pumps, converts to 4 wire...except 2 cylinder
(opt 2)
5007420 - for 4 wire pumps except the engines listed for 5007421
5007421 - for 4 wire pumps 2 cyl. 40-50 hp and 3 cyl 60 TTL
(opt 3)
5007422 - for premix applications
Your engine without a doubt has a "4 wire" pump as the 3 wire pumps were from the late 80s/early 90s. You'd therefore pick 5007420 if you want to get back to automatic oil mixing, or pick 5007422 if you want to pre-mix. The 420will cost you about $400 locally, about $300 on line. The 422 (premix) pump will be about $100 less.
(opt 4) As Tashasdaddy mentioned, you can go with an other type of more generic pump. I won't mention anything about this since I know nothing about it except (a) others seem to have done it successfully and (b) sometimes the larger engines need two of these pumps hooked up together to provide enough fuel.
