b john deere, fuel shut off valve

Anonymous-0 · May 27, 2012

i shut the fuel valve off when i'm not using the tractor but it still leaks gas into the oil, is there any o rings or seals that can be replaced or is it time to replace the whole shut valve / sediment bowl assembly

thesmoothedeere · May 27, 2012

Got to be careful ... Even a brand new one will leak ,like it did on me. I put a needle valve on after my bowl assembly. Never a leak now but not ok with the correct police.

Bob Harvey · May 27, 2012

Depending on the unit, new replacement valves are available. Got one for my 2N and it fit my Model 60 assembly - didn't use it because I cleaned up the original and it works fine. HTH

bigboreG · May 27, 2012

If it works. . .thats all that matters.

thesmoothedeere · May 27, 2012

I also added the (dreaded) clear in-line fuel filter . When you open the valve up you can see the fuel stop when it fills the carb , making it clear that your float is working properly . Kinda handy .

Kurt_JDB · May 28, 2012

For fuel to get in the oil, you must have two problems, first is that your shutoff at the tank is leaking. Second is that the needle valve controlled by the carburetor float is leaking.

It is a pretty easy job to replace the needle valve in the carburetor. It is also a pretty easy job to replace the shutoff valve at the tank depending upon the year B you have. The late B had a much better shutoff than the early B.

Here is a trick for you until you get it fixed: First replace the bowl drain on the carb with one that you can attach a tube to.

Then to shut down the tractor, turn off the fuel and let it run until she dies. Then attach a tube to the bowl drain and put the other end in a 5 gal gas can. Open the fuel drain. If it"s a slow leak, it will just drip occasionally and will evaporate. Otherwise you will slowly fill the can. Pour the gas back in the tank before you start it again.

There is obvious danger in this if your tank overflows, so don"t park near any structures, and get er fixed.

Kurt

sgtbull · May 28, 2012

Has someone put on a later model's oil pressure shut off type sediment bowl? That is a likely way for gas to get into oil. If not, your cylinders would be getting a lot of fuel in them otherwise, as that's pretty much the only way it can get there. If it has been "updated" with a newer sediment bowl like found on the later # series tractors, it could have a bad diaphram, which will allow the fuel to get to the oil via the oil lines.

Anonymous-0 · May 28, 2012

I replaced all of the two way shutoffs on my US Bs with the needle valve sediment bowls and left the three way diverter on. I also replaced my 630 with the needle valve bowl. I have found non ethanol gas which I add Marvel oil to it.

b john deere, fuel shut off valve

Anonymous-0

Well-known Member

thesmoothedeere

Member

Bob Harvey

Well-known Member

bigboreG

Member

thesmoothedeere

Member

Kurt_JDB

Well-known Member

sgtbull

Member

Anonymous-0

Well-known Member

Similar threads