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How to adjust floatbowl. It won't stop leaking gas out of mower

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Hi check for Wear on the float where needle sits to check Float level ( with the bottom of carby off ) just get it roughly horizontal with the top rim ,:::: one more thing give the float a shake to check if any petrol has leaked inside the Float.this can cause the carby to leak. ,U might need a new needle & seat. , Cheers.

Posted on Dec 02, 2016


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2 Answers

Gas keeps getting in with oil what is wrong what do I do

Normally this caused by a leaky float needle valve in the carburetor; although, if you have a vacuum operated fuel pump it internal may ruptured.

Apr 16, 2015 | Troy Bilt 175HP Manual 42" Riding Mower


Floatbowl Leaking?

Quite often the reason for a leaking floatbowl on a carburettor is the swelling or mis-alignment of the rubber O-Ring. This can happen when fasteners are not tensioned in a proper sequence or are unevenly tightened.<br /> After removing the floatbowl, the rubber gasket if dislodged at all often does not sit snugly back into the small groove. Carefully wash rubber gasket in soapy warm water and allow to dry in the sun or low heat. When completely dry, place rubber gasket in a freezer whilst servicing carburettor(s), this will allow all excess sweeling to subside and easilly fit the floatbowl's grooved gasket lip. Be sure to tighten retaining screws in a diagonal fashion to the same tension till all are tight. Cheers.<br /> <br /> <br /><img src="ckoira57.JPG" />

on Dec 11, 2010 | Motorcycles

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I have a tecumseh carburator .It is the type with the float in the bowl.My problem is I can not get the carb to stop leaking gas .The float and bowl have both been replaced.It still continues to leak.I am...

Does the bowl have a drain screw that could be leaking? There may be a gasket there.
If it is leaking from the top flange, it sounds like the float is not stopping the gas.
Try taking the bowl off and holding the float up; does that stop the gas?
Do you have to push the float up beyond horizontal before the fuel stops?
If so, the plunger may have to be adjusted higher to reach the seat.

Dec 09, 2010 | Craftsman Garden

1 Answer

My son owns a 2005 pw80 lately when he rides it, alot of gas runs out of the over flow tube what do i need to do to fix this problem

More than likely some grit or build-up is stopping the float bowl needle from stopping the fuel flow through the needle valve seat.

To test and clean, turn off fuel tap and drain fuel from carby via drain plug. Loosen carby manifold clamps and rotate carby enough to undo floatbowl. Return carby to level position and place a spill container underneath carby, turn fuel tap on and off (enough to allow small flow of fuel through open needle seat).

Now, gently hold up floatbowl with enough lift to close off needle valve seat and turn fuel tap on. If fuel still comes out you have a severe needle and seat problem requiring a replacement, if only a small weep of fuel is emitted it may just need a clean with a carby cleaning spray.

If no fuel comes out, your problem is the height adlustment of the floatbowl's level. Your engine is not using all the fuel that can be delivered and flows out the overflow outlet. The floatbowl level should be re-set incrementally to avoid leaning out your engine at high revs with too low a float level. To close off with a lower level you need to bend the small tab upwards.

The link below is for the same carby in exploded view format with all parts named. Cheers!

Sep 24, 2010 | Yamaha G5 Motorcycles

1 Answer

Rear Carb leaks fuel out of overflow

Hole in the float. It fills with gas, sinks and fails to stop the fuel flow

Apr 25, 2009 | 1995 Suzuki VS 1400 Intruder

1 Answer

Lawn Mower begins then stops before in use

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It means that either not enough gas is getting into the engine. The gas you pump in when you prime is enough to start the engine but not to keep it going.

There could be several things that cause this.
1. Old fuel:
Solution: Replace the fuel. Dump out the old stuff. If it is a year old it won;t work.

2. A dirty carburetor:
Solution: Clean the carburetor.
Easy carb clean:
Pull the bowl off and use carb cleaning solution to clean it. (you can buy carb cleaning solution a Wal-Mart in the automotive section. I have also heard acetone will work but I have not tried it.) Make sure not to loose the little parts like the pin.

Better carb clean:
pull the carb off the machine and clean each part with carb cleaner. There is a youtube video someone else posted on how to do this.

3. Your gas/air flow is not adjusted properly.
To check:
Pull off or out the air filter. Try to start it.
If the machine runs longer there are two options: The air filter is dirty so replace it, or the air flow is not adjusted proberly. There should be a screw like thing sometimes called the "main jet" that you turn to adjust the air flow. It is on the carburetor side or bottom.
If the machine dies faster or won't start there is probably too much air flow and by removing the filter you added more air. Adjust the "Main Jet" as above.

Apr 15, 2009 | Craftsman 10.5 Hp 33" Commercial Cutting...

2 Answers

Yard machine 139cc will only run short time with choke

Check the float and the adjustment screw on the bottom of the carb. Usually if the float stays up it will continue to leak gas and also will only run on choke. Spray some carb cleaner in there and try to get rid of any debri also try changing your air filter or cleaning it

Feb 08, 2009 | Yard Machines 158cc Push Lawn Mower #11a...

1 Answer

Starting problem

Sounds like a stuck float not stopping the in-flow of gas. Try giving the carb a whack with the handle of a screwdriver or something. You can use a hammer if you use your noodle and don't beat the carb to death with it. Plastic handled screwdrivers are less likely to break of chunks of carb. You may need to remove the floatbowl and check the float needle if the tool violence fails.

Nov 10, 2008 | 2005 Kymco Xciting 500

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