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Vacuum fuel pumps

9106 Views 18 Replies 9 Participants Last post by  Stan the Air Man
I am in need of a new vacuum fuel pump for a modified Club Car golf cart with a Kawasaki FE290 motor . A new pump from the golfcart store or Kawasaki runs $60-$75. A new B&S pump (#808656) runs $25-40. I'm not sure what motor B&S uses this pump with but these pumps have the same size ports, same number of ports and the chamber appears to be close to the same size. The rebuild kits I find on Ebay look to be identical, same number of diaphragms, gaskets and valves. Can anybody tell me why the B&S won't work? I'm guessing that as long as they are about the same size they will pump at about the same rate. Saving 40 bucks looks good to me. I know this isn't technically a tractor but around the Lazy MF it gets used like one. And it cost me a lot less than a Gator or a Mule.

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If you buy a small inline electric fuel pump rated for an import with a carbed engine you'll be fine..

I used an old AC fuel pump I had lying around that is big enough to handle a 400+ V8,looks like a mini beer barrel, on my 20 HP Kohler and it hasn't flooded it once,and it puts out 6-8 psi..the lower pressured import style pumps will put out 3-6 psi..the needle in a car carb & its float aint much different than a small engine,I wouldn't worry about it flooding unless the needle and seat needs replacing anyway..

The type of pump I'd look for resembles a small electrical transformer,they have a nylon ball inside thats operated by a solenoid..they are tiny enough to muont easily in tight engine compartmemts,but remember,electric pumps "PUSH" fuel a lot better than sucking it,so its important to mount them close to the tank if possible--I think thats why many fail rapidly,and they get a bad rap,they get mounted close to the carb and run too long airbound,and overheat and seize..
I wired mine to a push button and only energized it to prime the carb for a quick start after long sitting time--the stock vacuum fuel pump seems to work OK once its started,it can draw gas through the electric pump even with it "off",so I only use it when it has sat before firing it up--but if you bypassed the vaccuum pump you could run exclusively off the elecrtic pump OK..use an inline fuse and a switch though,for safety--the "correct" way to wire an electric pump up is to incorperate it in with the oil pressure sending unit ,so it wont keep running if the engine stalls,to avoid filling the crankcase with gas--but I haven't gone to that extreme on my setup,since I use it mostly as a "primer" to fill the carb bowl up after its sat a long time,not constantly..
I think another reason the electric fuel pump is wired into the oil pressure circuit is so that in an accident, if the line is ruptured (and the engine stalls) gas won't be pumped all over. No oil pressure, no power to the pump. Good idea on the tractor too.

I like your idea of a 'helper' pump...
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