I have a 5.5 craftsman push mower, replaced the needle valve, bowl, and nut with washer on the bottom of carbuetor because it was leaking gas. Remounted carbuetor, runs but has no power. Question, did I hook up the carbuetor linkage right? firstname.lastname@example.org
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The washer should be on - otherwise gasoline will usually leak out. If it runs briefly after a day or so of not running, the float may be stuck in the up position - pressing the needle into the seat. What ever little gas is in the bowl is quickly used and it stalls. Check out this page for carburetor cleaning / rebuilding videos - it's pretty easy to do.
You have to take the bowl nut off he bottom of the bowl and clean it with a small wire or torch cleaners. Try not to allow the bowl to drop off the carb, the float drops down and the needle might come off the float.
The primer bulb is replaceable (it is held in place with a ring with small tabs around it, behind the bulb). The carburetor's bowl may be loose and the bowl nut need to be tightened or the bowl nut (called that, but it is actually a small brass bolt) has an exterior washer that needs to be replaced. Another thing that may be causing your problem is the carburetor bowl-to-body gasket may be leaking and finally, the needle valve may not be completely shutting off the fuel going into the carburetor bowl. All of these parts are replaceable and the carburetor can be fixed to where it will not leak. The key is to determine exactly what carburetor the machine has. The manufacturer and model of the the engine and the year made are key here.
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.
It is quite possible that varnish and/or debris have clogged the main jet. Common problem The main jet is the brass bolt that holds the bowl on. Remove the bowl, clean it and inspect the bow carefully for 2 pin-size holes on the smooth part of the nut (some call it a bowl-nut etc.) Gas will leak out carb onto mower deck unless tank is drained first without the bowl on and the float hanging free (if your needle valve and seat are clear). Upon reassembly consider installing a small inline fuel filter.
Sounds like you tilted the unit enough to cause the float in the carb to open too much and therefore, the needle valve inside is stuck.
Remove the bowl and let it resit itself and then re install the bowl. If that doesn't work you may need to purchase a new kit for the carb to get the needle valve. If you find a small minut ring around the face of the needle valve replace it. That's why it's gonna leak. Good luck
it may have a crack in the fuel line from tank to carb or the plunger may have a hole in it it all works on gravety feed & no air leaks from gaskets & fuel lines hope i helped if not e-mail me & let me know what other problems it has thanks wade