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Fuel Line Shut Off

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Sal

04-04-2001 05:34:56




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Hello all and thanks for your help in the past.

I just got my 8N from the Mechanic, it was supposed to be done in January, but...thats another story.

For some reason he eliminated the fuel shut off and now gas dribbles out the carb.

Since I don't want to mess with the fuel tank. I was thining of putting a in-line shut off above the carb. I would cut the copper line the put in a copper shut off that has compression fittings.

A)Does this sound like a good fix?

B)Where can I get such a shut off vlave?

C)While I am at this job, would it be a good idea to add a in-line filter that I can change?

Thanks

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Randall(AL)

04-04-2001 14:09:56




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 Re: Fuel Line Shut Off in reply to Sal, 04-04-2001 05:34:56  
Sal, I rebuilt my carb a couple of years ago and it doesn't leak (fuel cell is very clean). I bought a fuel shutoff valve like on a lot of lawnmowers. It is inline, plastic, and doesn't leak. After reading post after post of people's new shutoffs leaking and the luck I have (Murphy) I new better than to try the original style. I also put in an inline filter. And I ALWAYS shut off my fuel when I shut off the tractor because of posts that I read regarding "hydraulic lock" from leaking carbs. That inline cut-off costs $2.95 and is easy to find. FWIW

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hey busdriver

04-04-2001 09:43:04




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 Re: Fuel Line Shut Off in reply to Sal, 04-04-2001 05:34:56  
My suggestion is to put the shut-off valve back
on, these tractors and every other make tractor
were designed with a shut-off valve on them. 50
years ago these needles and seats leaked
,althought some tractors you can get lucky enough
to not have to turn the valve off, but why put
extended pressure on a gravity fed system needle
and seat when you don't have to ? As for the
inline filter some say the three filters already
installed are sufficeint, over 50 to 60 years you
are bound to get years of crud building up and for
the few extra cents ,it may save pulling apart the
carb to clean.
Stan

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Hal

04-04-2001 09:10:43




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 Re: Fuel Line Shut Off in reply to Sal, 04-04-2001 05:34:56  
Sal- Did your tractor have the original glass bowl shutoff prior to the repair. What did the "Mechanic" do with it? You should have told him you wanted it back. If the carb is in good shape and float adjusted it should not leak, however a speck of rust or sand or whatever in the fuel tank can get under the seat and cause it to leak, even when all else is ok, hence the filter is a good idea. It's never a bad idea to close the shutoff when parking for period of time.

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Sal

04-04-2001 11:08:11




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 Re: Re: Fuel Line Shut Off in reply to Hal, 04-04-2001 09:10:43  
yes it originally had the glass bowl setup. But it was a real mess the bowl was chipped and to fix it there was some kind of putty or caulk used to keep it from leaking.

The 'mechanic' ended up putting in the new fuel line and rebuiling the carb...also flushed the gas tank several times.

From what I am reading I am going to put in a line shut off and a line filter...I'll hit NAPA this week.

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Hal

04-04-2001 13:25:30




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 Re: Re: Re: Fuel Line Shut Off in reply to Sal, 04-04-2001 11:08:11  
Other than having the shutoff, the other advantage of the original bowl is that it could collect sediment or water; the water would settle to the bottom of the bowl and you would see it. There was also a screen filer in the original setup. You can buy a new glass bowl, gasket and screen assembly, each around $1-2 from several of the online vendors mentioned here or maybe $15-16 for the complete setup, but I know how it goes when someone else is working on your machine and you can't wait for parts. The best thing would be to try to make it like original along with adding the in-line filter, but good luck whatever you do.

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bg

04-04-2001 07:02:09




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 Re: Fuel Line Shut Off in reply to Sal, 04-04-2001 05:34:56  
I don't like a copper fuel line. People use them because it's easier than replacing the steel line. Why don't you just go back and install the right kind of fuel bowl/valve/filter and a steel line with the elbow filter at the carb. I never had a problem with my carb leaking and I never shut the valve. If the float is adjusted right and there are no air leaks, it shouldn't leak.



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Claus

04-04-2001 05:53:55




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 Re: Fuel Line Shut Off in reply to Sal, 04-04-2001 05:34:56  
I have a "Gas" (not gasoline) valve on mine and use an In-line filter. You cannot beat these. Get a metal one that is about 1.5 inches in diameter and about 2" in lenght. I do not shut my gas off unless I remove the tank. Did you ever consider repairing your carb?
Happy Motoring
Claus



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Snowplow

04-04-2001 06:27:49




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 Re: Re: Fuel Line Shut Off in reply to Claus, 04-04-2001 05:53:55  
Many of us have found that regardless of carb rebuild these carbs just leak. I have had 3 Ns and all of them required me to shut the fuel off if I was not running for any length of time. Otherwise it leaked out the bottom as you discribed. You can but a fuel valve shut off assembly and bowl for $16 at most sites online.

The fuel filter is a great Idea. I'm replacing my fuel line and will be adding one.

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Claus

04-04-2001 06:34:29




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 Re: Re: Re: Fuel Line Shut Off in reply to Snowplow, 04-04-2001 06:27:49  
As long as you are willing to put up with leaking carbs then they will not get fixed. I know that is is a condition that can be fixed without much fuss. I do have a shutoff valve albeit not the original. Happy Motoring
Claus



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Sal

04-04-2001 07:33:54




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 Re: Re: Re: Re: Fuel Line Shut Off in reply to Claus, 04-04-2001 06:34:29  
From what I am reading I gather that the Carb should NOT leak.

I was told that the carb, the original, was rebuilt and I think it was, I am not sure it was done correctly.

Any advice on what I need to do to the carb?

This is all new to me.

Thanks.



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Snowplow

04-04-2001 13:50:17




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 Re: Re: Re: Re: Re: Fuel Line Shut Off in reply to Sal, 04-04-2001 07:33:54  
As Claus and others have said, they really should not leak, even if many do. However I spent enough time playing with carbs to know that when it's running good leave it alone. If turning off the fuel helps it is easy enough to do. I know that bothers some folks but life must go on, the snow must get plowed, and the gas gets shut off.



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bj/8N/mt

04-04-2001 08:04:16




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 Re: Re: Re: Re: Re: Fuel Line Shut Off in reply to Sal, 04-04-2001 07:33:54  
a substantial percentage of carb leaking is caused by needle and seat. you can buy just the needle, seat, and a gasket kit--rather than a whole rebuild kit--from Stevens [800-333-9143] for six buckos before shipping and handling. Probably other places too.

While you have it apart make sure the float floats and doesn't hang up.

Your mileage may vary



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