if the red lead becomes shorted to ground the ECU will see. After the second or third time, I installed Holley Electric fuel pumps and ditched the mechanical pumps which made the job a lot easier to do. The water pump was replaced last year with what is supposed to be Yamahas improved impeller. Water Pump Impeller Kit 1740093951 Repair Rebuild Set com outboard motor. I replace my impellers every two years so I have done it on my boat 8 times since I bought it and countless times on other boats. inboard sterndrive and outboard boat engines Our team of marine engineers in. Usually, they are stuck in one of the pump's passages.Īs I mentioned, I really don't like the fuel pump and water pump combination. 2 or 3 bolts held it on to the engine, and 2 hoses connected to it. The pump was on the front lower left of the engine. Technologic80 said: 3 boats ago, I had a 99 5.7GS. If the impeller is missing vanes.you must find them or they can and will block the cooling system. Re: Need information on changing Volvo Penta 5.7L GS impeller. The rebuild is a very straightforward process. Make sure your fuel valves are in the off position and then disconnect the fuel lines and remove the entire assembly. It has 12 impeller blades, a spline drive and is supplied as an impeller kit with gaskets and o-ring. be careful removing the hoses and do not pry against the housings. MARKGOO Inboard Water Pump Impeller Kit 09-1027B-1 Replacement for Johnson F5B Jabsco 1210-0001-P Volvo Penta 860203 3862281 875812 21951346 Yanmar 127610-42770 129471-42532 Boat Motor Engine Cooling Parts. Having never done this on an I/O, need any tips you guys may have. Be careful with the housings because they are ABS plastic and are easily broken. Not sure when the water pump impeller was last changed on my 89 5.7L Mercruiser w Alpha 1 outdrive, so Id feel better replacing it. The reason why is that removing the Starboard one is by "feel" since the raw water hose clamps are hidden by the housing. Impeller Kit Replaces Quicksilver 98-8M0137221 Four-piece Water Pump Impeller Repair Kit Produced to meet Mercury Marine original equipment manufacturer specifications to best protect your Mercuries stern drive and inboard engine. If you haven't done the job before, start with the Port engine so that you can understand how things come apart and go back together. CEF Impeller - 08-1029B 117.20 101.30 CEF Yamaha Impeller - 68T-4 51.20 44.20 CEF Impeller T/S OMC - OE 3854072, 987176 122.70 106.20. We have the same engines and frankly having the mechanical fuel pump as part of the assembly just makes it a much tougher job especially on the Starboard engine. There are many reasons why a raw-water-pump impeller in a marine inboard engine can go bad, including improper operating conditions, a poor operating environment, excessive wear or simple old age.
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