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sediment bowl question

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steve m

06-12-2005 19:37:25

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has anyone seen this one: when i tighten up the screw assembly that holds the sediment bowl up against the fuel valve, i get NO gas flow? But, if i loosen it all the way so the bowl is loose, gas flows. So, then i need to tighten it enough so the bowl is held in place, and there is a bit of fuel leaking past the bowl, but enough to run the tractor.

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Rob

06-13-2005 07:02:55

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Another thing... in reply to steve m, 06-12-2005 19:37:25

Hold the screen up to the light and see that it"s clear. That screen will plug up and look ok on the surface.

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Rob

06-13-2005 04:17:46

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Re: sediment bowl question in reply to steve m, 06-12-2005 19:37:25

Fuel won"t flow into or through a sediment bowl unless the carb float valve is open, unless there is a leak somewhere. After replacing that empty sediment bowl, a tight fuel system will sit there full of air until the carb float valve calls for gas. That is not a problem.

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souNdguy

06-13-2005 04:53:54

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Re: sediment bowl question in reply to Rob, 06-13-2005 04:17:46

Rob.. he's stating that he is trying to run the tractor but isn't getting enough fuel unless he loosens the bowl. He's not looking at the classic 'just filled' air lock between the carb and fuel bowl like you are refering to.

Soundguy

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Steve IA

06-13-2005 06:33:03

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Re: sediment bowl question in reply to souNdguy, 06-13-2005 04:53:54

I've ask before, but got no answer. How does tightening the sediment bowl stop the flow of gas, other than an air lock in the bowl? Thanks. Steve

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souNdguy

06-13-2005 06:53:51

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Re: sediment bowl question in reply to Steve IA, 06-13-2005 06:33:03

If that mesh screen sets wrong it tends to cause problems. Large hand cut gaskets will do the same.

Soundguy

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Dell (WA)

06-12-2005 20:35:06

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Re: sediment bowl question in reply to steve m, 06-12-2005 19:37:25

Steve..... ..that glass fuel bowl will do that. Irritaitin' ain't it? Most guys buy a NAPA/Balkamp p/n #730-9605 "O-Ring" to fixxitt. $50c, (cheap)..... ..Dell

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souNdguy

06-12-2005 19:39:34

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Re: sediment bowl question in reply to steve m, 06-12-2005 19:37:25

Ensure you have the little screen adjusted correctly.. and don't have the gasket hanging too far inside and blocking the outlet.
they can be tricky.. but you can get it to tighten down, and flow.. just gotta hold your mouth just right!

Soundguy

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souNdguy

06-12-2005 19:39:33

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Re: sediment bowl question in reply to steve m, 06-12-2005 19:37:25

Soundguy

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Tom WY

06-12-2005 20:59:16

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Re: sediment bowl question in reply to souNdguy, 06-12-2005 19:39:33

Why is there a square cutout in the screen?
Is it supposed to line up with something??

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Rob

06-13-2005 05:44:08

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Re: sediment bowl question in reply to Tom WY, 06-12-2005 20:59:16

Yes, that square hole is where the gas from the tank comes out and enters the bowl.

Now I am thinking guys do not line that up and end up thinking their bowl gasket some how stops gas from coming out of the tank. That would explain some things. Never could figure out how the bowl gasket could plug up that square hole.

Now just need to figure an answer to stripped threads in the fuel line port.

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souNdguy

06-13-2005 04:52:02

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Re: sediment bowl question in reply to Tom WY, 06-12-2005 20:59:16

Yes. Take a look at the underside of your fuel petcock assembly. Should be square fuel inlet that fuel dribbles thru from tank into bowl.. then fuel travels up thru screen to fuel line leaving water and sediment in the bowl, hopefully.

If they don't line up.. you'll see 'no-flow' problems.

Soundguy

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steve m

06-13-2005 07:13:26

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Re: sediment bowl question in reply to souNdguy, 06-13-2005 04:52:02

thanks for all the replies. I am using the cork gasket, and the screen has the square hole aligned with the outlet. Still, no or loose bowl - plenty of flow; tight bowl - no flow.
Is the o-ring Dell mentioned a replacement for the cork gasket? I don't see the part on the Napa website.
Is it possible there is enough play in the screen that it can deflect upward to block the flow?

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Dick k.

06-14-2005 05:51:25

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Re: sediment bowl question in reply to steve m, 06-13-2005 07:13:26

I had the same problem. So I finally took out the seiment bowl and put a flex hose with a standard fuel filter in line. The tractor runs fine until the fliter fills up with air and gets air bound (you can see it happen thru the filter). Which indicates something wrong in the carb, since the air has to travel up from that point. I have rebuilt the carb and still have the same problem. By loosing the bowl your letting the traped air escape. I just put a little tube into the top of the filter and a small plastic line to a height higher then the gas tank rather then buy a new carb. Now the gas goes thrugh to the carb and the returning air goes out the tube and life is good.

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souNdguy

06-13-2005 07:29:31

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Re: sediment bowl question in reply to steve m, 06-13-2005 07:13:26

The napa oring is somewhat better than the cork. Some like the cork.. some don't.

Bottom line.. if it won't run without the bowl tight.. you still have issues with the screen and gasket. Now.. if it won't flow with the tractor off.. that is normal.. gas has to ahve somewhere to flow.. and if the float is shutoff.. there is no where to go.

Soundguy

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