Question about Troy Bilt, Tuffy, Rear - Tine Tiller, 4.0 Tecumseh Engine

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Carburetor is leaking through a small pin hole, this hole was made by manufacturer

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The "hole" is an atmosphere vent, what is happening is the needle that shuts off the fuel to the carb when the bowl is full is not working properly, depending on model the carb repair kit that is most used to repair plastic tubed carbs is 632760b .....also be sure to flush out tank and fuel lines before adding fresh 89 octane fuel to the fuel system....hope this helps

Posted on Nov 19, 2009

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Posted on Jan 02, 2017

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Firing order of chevy c1500 truck


I have same problem where yoke goes inside transmission have a real small pin hole that is where the leak was replace seal keep leaking (((((((((yoke small pin hole)))))))

Aug 25, 2013 | 1993 Chevrolet C1500

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How to Clean Your Lawnmower Carburetor


One of the most common problems with small engines, especially now with Ethanol in fuels is the blockage of the fuel system. Whether you have a Briggs and Stratton engine or a Stihl chain saw, knowing how to clean the fuel system is a good idea.<br /> <br /> I start off by specifying the type of carburetor you have. Two common types are bowl type and cube type. Bowl type hold fuel in a bowl before it is used and cube type are used on small multi-axis machines like cultivators or chainsaws.<br /><img src="barterjoe_6.JPG" /><br />Bowl carburetors are fairly simple to take apart and clean. You have three major jets and a metering system. The jets include Hi speed (the large holes)<br />Transfer jets (medium holes) and Idle jets (small holes). <br />The metering system is a needle and a seating point that will need cleaned or replaced.<br /><br />I recommend replacing parts rather than reusing because Ethanol can cause microscopic pits that will cause fuel leaking and poor running.<br /><br />You can obtain parts from a local dealer like www.arcolawn.com or the engine manufacturer. It is always recommended to change your fuel filter, oil and oil filter after this repair to prevent engine damage from diluted oil and debris.<br /><br />Cube Carburetors are a bit trickier but the same principle. See the following link for the manual to get the settings correct.<br /><img src="barterjoe_5.jpg" /><br />Helpful links:<br />www.walbro.com (Bowl Style)<br />http://zamacarb.com/tips.html (Cube Style)<br />www.arcolawn.com (Parts Ordering)<br /><br /><img src="barterjoe_4.png" />

on Mar 28, 2011 | Briggs & Stratton Briggs Stratton...

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Kawasaki fc420v-fuel leaking from carb.


I have the exact same problem on a JD175 with the same engine--gas spewing out of a hole above where the fuel line connects on the back of the carburetor housing. There's a similar hole on the opposite (front) side of the housing. I'm told there are factory-installed plugs in both holes and the whole carburetor assemble will need to be replaced. Please post if you discover something different!

Apr 07, 2013 | Motorcycles

1 Answer

Gas does not go through carburetor


The hole may just be an overflow hole which would suggest the inlet needle in the carb is leaking, the fuel should not be high enough in the float bowl to allow this, it should be controlled via the float and needle.

Feb 09, 2013 | Garden

1 Answer

Pin hole leak in rear differential fluid


I really don't think you can dent the "Pumpkin" per se, since it's made of Cast Steel and that would mean its probably a crack... Do you mean the pumpkin 'cover' is dented and has a pin hole? Either way, if there is a crack/pin hole in the Diff, I'd be extremely careful.. And make sure the damage is minor since your dealing with something that can explode on you going down the road - causing the rear wheel's to lock up..!

Sep 06, 2012 | Toyota Pickup Cars & Trucks

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Troy bilt mower ran fine then died and now it wont start back. It has fire and a new spark plug. It gets fuel past the filter. It starts if i put a small amount of gas into the intake. Whats wrong? My...


Remove the air filter and set aside.
Take a can of carburetor cleaner and spray the inside of the carburetor.
Let it set for a moment and then try starting the engine. It should run a few seconds. Repeat. When it starts squirt a small shot of cleaner in the carburetor to keep it running. That should remove the varnish the gas leaves as it evaporates over the winter.

If it still won't keep running then there is trash in the float bowl plugging the needle valve seat and the jets.

1) Turn off the gas or remove the gas line and plug it with a small screw or stick to keep it from leaking out of the gas tank.
2) Look on the bottom of the bowl for a nut .
3) Remove the nut and drop the float bowl.
4) Carefully remove the pin holding the float and needle valve assembly.
5) Take the carburetor cleaner with the straw it comes with and spray every hole in the carburetor to clean the jets . (up through the needle valve seat, down top of the carburetor , see a hole, spray it with the cleaner.)
6) Clean the float bowl.
7) Reassemble and make sure the gas isn't leaking and try to start it again.

Jun 06, 2010 | Mtd Troy-Bilt Bronco OHV Tiller

2 Answers

1986 kaw 454 ltd carbs leaking gas into airbox anybody know how to fix?I had. the carbs rebulit twice. the last time at the dealer lasted about a year.any body help me.


You have float and/or needle and seat problems. Remove the hoses from the air box to each carburetor. Set bike on center stand or block up to get it level--turn on fuel tap and watch for leakage from each carburetor. Turn the fuel tap off. Pop the float bowl off of any that leaked, remove the float and pin--catch the float needle. You probably have debris in the seat area which causes faulty float action. Turn on the fuel tap again and catch the discharge in a clean small jar. Look for rust or other particles in the fuel. If all carburetors are affected, look at the fuel strainer screen just above the fuel tap bowl--no holes and seated properly. You may need to flush the tank if the interior is rusted or full of dirty fuel.

Aug 04, 2009 | kawasaki ZZR 250 Motorcycles

1 Answer

I am getting fuel leaking from the bottom of the carb and I have adjusted the screws on the bottom of the carb but it is still leaking...it is a 1997 flstf fatboy


Carburetors have a Float Bowl on the bottom. This float bowl has a small amount of fuel, that the carburetor uses. (The float bowl's amount of fuel, is replenished from the gas tank. The fuel is gravity fed from the gas tank, through the Fuel Line)

The float bowl has a Float Needle inside. The float needle is attached to the Float. The Float resembles a thick doughnut. On one end of this doughnut, is a flat piece of metal shaped like a U on the end. Looking at this -> U shape, there are two holes at the top. There is a metal pin that goes through these holes, and the pin is attached on it's end's, by the main body of the carburetor.

The flat metal U shape, and the metal pin, works together to form a type of hinge, allowing the float to pivot on it.
Where the U shaped hinge is attached, the float needle, clips to it.

The float needle has a tapered neoprene tip, and sits in a Float Needle Seat. This seat is a barrel shaped piece of brass, and has a tapered hole at the bottom. Fuel comes up through this seat, and the float needle regulates how much fuel can come in.

As the float drops down, it draws the float needle out of the float needle seat, and fuel comes in. As the float bowl fills with fuel, the float rises, and pushes the float back up, also pushing the float needle back into the float needle seat, cutting off the flow of fuel.

There is a specified height of the float, in relation to where the float sits in the float bowl. If the float sits too high, the float bowl fills up with fuel, and overflows. This overflow goes through an Overflow Tube, on the carburetor.
(If the float sits too low, the engine starves for gas)

A LOT of times, crud builds up in the gas tank, makes it's way through the fuel line, and gets into the float bowl. It can get in-between the float needle, and the float seat, thereby flooding the carburetor out, and fuel comes out of the overflow tube.

The float bowl is also attached to the carburetor with a brass main jet nut. At the bottom of the float bowl, this will look like a brass head of a bolt. Under the brass head is a small O-ring. This can leak. First step is too insure this is tight. (Do Not Over tighten! This is part of the main jet, and is expensive! It's Brass)

Where the outer part of the float bowl itself, attaches to the carburetor, there is another O-ring.
A large one. This O-ring, like the main jet O-ring, can deteriorate over time. Additives that gasoline has in it, heat from the engine, and heat from the sun does this. Plus just age. Neoprene breaks down after time.

It could also be that the neoprene tip of the float needle has broken down.

You indicated you adjusted screws on the bottom.
These are the Main Jet, and Idle Jet -> Air Mixture screws. All they adjust is how much air goes through these jets.
The amount of fuel going through, is predetermined by specific passageways, that are drilled through the main body of the carburetor.

This only comes into play when the engine is running. With the engine off, and fuel leaking out, you have crud under the float needle, or one or more of those O-rings has deteriorated.

May 12, 2009 | Harley Davidson FLSTF - FLSTFI Fat Boy...

1 Answer

Pin hole leak in metal under dishwasher


difficult to weld stainloess steel. another way is to drill out the hole slightly and fit a small nut and bolt with fibre washers

Apr 12, 2007 | KitchenAid 24 in. KUDI02CR Built-in...

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