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I have craftman lawn mower it has honda motor gcv160. i had old fuel in the tank now i try to start my lawn mower but doesn't start. i changed sparkplug but didn't work. then i had to clean the carburetor. i cleaned it and put it back but provlem is now fuel leaking from air filter. what did i do wrong. please help me

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Hi islamamin200..
You have a problem with the inlet float, there is something holding it from closing totally.
When you cleaned the carburetor did you clean it with a cleaning solution such as lacquer thinner, this is used to cut the "varnish" buildup in the jets and needle valves of the carburetor.
Follow the directions below:
Remove your spark plug and check to be sure you are getting fire at the spark plug.
You do this by grounding the plug on the head of the engine and pulling the crank rope, if you are getting spark then:
Check/Clean/Replace your fuel filter if you have one, normally they are located in the fuel tank.
Also make sure you are using fresh fuel...and oil mix if your using a two cycle mower or weedeater with the oil to the right mixture and not too much oil as it can cause hard starting.
If the mower/weedeater is over a year old, then I recommend that you buy and install a new carburetor repair kit,because the diaphragm will get hard and that will cause it to be hard to crank.
Sounds like you will need to clean the carburetor or replace your carburetor internal rubber parts like the diaphgram and O rings.
Be sure to use compressed air to blow out all the fuel and air passages.
Be careful when blowing out the passages, because there are sometimes small rubber type seats in the bottom of some of the passages.
Sometimes you can get by with priming the carburetor or using starting fluid and letting it run a few times like that and it will flush the gunk out of the jets,but most of the time you will need to rebuild the carburetor.
Keep in mind that the float for the carburetor must be level when you go to reassemble the carburetor or follow the instructions you get with the carburetor kit.
When you clean your carburetor and remove the jet screws, you will first need to lightly seat the jet screws.
But before you lightly seat the jet screws count the number of turns it takes to seat the jet screws from their original position.
Be sure to mark the turns down on a piece of paper.
That way when you put the jets back in, you know to lightly seat them first and then turn them back out to their orginal position before you started.
Once you have your carburetor rebuilt that should solve your problem.
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Posted on May 26, 2011

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If the carburettor has a float bowl, remove it and check that the float is cutting off the fuel supply when it is pushed upwards. If it doesn't, there may be some dirt or other obstruction preventing the valve from sealing allowing the float bowl to overflow into the intake of the carburettor.

Posted on May 26, 2011

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