Carburetor leak

Dwashebek · Dec 23, 2018

When I forget to turn off the fuel on my 1953 Super H, gasoline leaks at the bottom of the carburetor. While the tractor is running I don?t notice gas leaking. Any advice on this? Also, I have an oil leak at the shaft seal on the transmission side when running. The oil looks like ?baby **** brown?. If I changed it, flushed the transmission and refilled with 85/140 weight oil, would the leak slow down? Is there an additive I could try in the new oil as well?

rustyfarmall · Dec 23, 2018

Possibly the carburetor float is out of adjustment, ot the float valve is in need of replacement. Most likely is both need attention.

Dwashebek · Dec 23, 2018

The carburetor was supposedly just rebuilt, so the float
adjustment sounds like a place to start. Can it be adjusted
while still on the tractor?

old · Dec 23, 2018

Only way to adjust the float is to take it off and open it up. But if it was rebuilt also good chance it has one of these rubber tipped float needle and if it does the problem is likely to go away after a while since the tip needs to get a set in it which happens over time. When I rebuild a carb I put a set in the needle by tapping on it before putting the carb together. Either way one should always turn the gas off when not using the tractor to keep that from happening and also to not have that cause gas to get in the oil which can cause a blown engine

used red MN · Dec 23, 2018

As to your second question, flushing and changing oil in the trans would probably just make it leak worse. Unless for some reason the lube in there now is real thin. Old grease like you are describing is usually thick. Only way to stop the drips is to replace the seal. When replacing the seal you need to make sure the seal surface on the shaft is good and the bearings are not to worn.

rustred · Dec 24, 2018

most probable cause would be the needle and seat. usually floats out of adjustment do not case gas to keep flowing into carb. much easier to remove carb and turn bottom upside down to check the float level. it can be done on the tractor but pretty hard to keep the needle in place if you pull the float pin. also supposedly the needle should have been changed buy nothing guarranteeing that till you have a look.

560Dennis · Jan 1, 2019

Fuel leak may be from a a fuel logged float that will not seat needle any more, fuel listings going out the vent .

560Dennis · Jan 1, 2019

Forgot this the fuel float was designed for older specific gravity fuel newer fuel have alcohol with may require the float to dip deeper to get the needle to shut off.
Good luck

denglish · Jan 2, 2019

Try tapping the float bowl with a wrench or screw driver and see if the leaking stops. It may be your float is hanging up. Otherwise, start turning the gas off at the tank to stop the flow. You might get lucky and find the problem goes away on its own.

Carburetor leak

Dwashebek

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rustyfarmall

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Dwashebek

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old

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used red MN

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rustred

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560Dennis

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560Dennis

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denglish

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