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Old 08-19-2007, 09:13 AM   post #1 of 11
MaineDad
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Default Kohler Fuel Pump Rebuild

Guys,

I'd like to rebuild my original fuel pump on my 1996 Kohler Fuel Pump. Part number 47-559-08. Where can I find a new diaphragm for it?
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Old 08-19-2007, 09:31 AM   post #2 of 11
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Default Re: Kohler Fuel Pump Rebuild

Micah--=You might be able to find it locally, if you have a good sized shop near you that does a lot of Kohler parts.

Online, I have dealt w/ these folks twice and both times got what I needed//

http://www.tulsaenginewarehouse.com/

**Side note**--I'm in the midst of replacing the pump on the K321, and as far as I looked, at the time--no bebuild kit was still available,for my application, so I purchased a new one (plastic replacement)--now i can leasurally find a rebuild for the old one.

Your Toro or JD dealer should be able to order it, if you don't have an independant shop near by.
Stand-by for sticker shock, though!!
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Old 08-19-2007, 09:52 AM   post #3 of 11
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Default Re: Kohler Fuel Pump Rebuild

Glenn,

Thanks. I have already bought and installed a $49 replacement at NAPA, but it does not have a check valve. Now the gas drains out of the pump if it sits for a while and it takes 3 times to start. I believe the check valve keeps the fuel from draining out allowing it to have some gas for the next start. Any thoughts on what else to do?
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Old 08-19-2007, 10:41 AM   post #4 of 11
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Default Re: Kohler Fuel Pump Rebuild

How about one of those little in-line shutoff's ??just a twist of the plunger when you finish--then open when you get ready to start?
About 3.00 at most..

I've got them on two mowers now and work good.
I think Volfandt installed one on his 856--look back thru his {Venerrable 'ol W/Horse} thread for a picture...
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Old 08-19-2007, 10:55 AM   post #5 of 11
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Default Re: Kohler Fuel Pump Rebuild

Good idea. Will try that first.
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Old 08-19-2007, 02:53 PM   post #6 of 11
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Default Re: Kohler Fuel Pump Rebuild

If it drains out where does it go? In the cylinder?
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Old 08-21-2007, 08:23 PM   post #7 of 11
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Default Re: Kohler Fuel Pump Rebuild

I believe it goes back down the fuel line...

I sprayed a little starter fluid in the carb tonight and it started right up. I ran it for a few minutes and then shut her down and turned off the line with a new inline shutoff valve. Hopefully that keeps the gas from draining back down and starts up quicker. I'll try to start it tomorrow night and see what happens. I'd still like to find an original fuel pump with the check valve if possible.
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Old 08-21-2007, 09:01 PM   post #8 of 11
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Default Re: Kohler Fuel Pump Rebuild

MaineDad, something doesn't sound right. The Kohler pump, and the one from NAPA should have the check valves. (In and Out). there's no other check valves that I know of. Try the shutoff as you said, you may have a bad pump. One of the check valves maybe dislodged in the pump. Tony
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Old 08-21-2007, 09:29 PM   post #9 of 11
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Default Re: Kohler Fuel Pump Rebuild

You can buy little check valves from people at this link...

http://www.smokstak.com/forum/calendar.php?c=1
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Old 08-23-2007, 08:18 PM   post #10 of 11
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Default Re: Kohler Fuel Pump Rebuild

Update: Started her up after two days with the shut off valve keeping the gas from draining out of the pump and it started up on the first crank! So it adds just one extra step after I turn it off but it's better than spending $90 for another pump.

Thanks for the advice guys...
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Old 08-23-2007, 08:58 PM   post #11 of 11
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Default Re: Kohler Fuel Pump Rebuild

Thanks--Micah--sometimes the simplest (until you find the real cure) work good.

Let me know what you decide to do later on...
Good luck, friend!

glenn
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