Air jets wont turn on - Whirlpool Home

take the carb completely apart and clean polish every thing side that you can make sure gas is new gas don\'t run old gas throw it out make that new gas runs throw the line to first before you start it take all the jet screws out and blow high pressure air throw all openings until air comes out freely polish jet screws with fine steel wool be careful
you dont mess up the of jet screw just clean it til it shines . oh yes make sureyou turn jet in first and count how meney turn s it is right down so dont forget clean them put back in . if it still donst start check the pionts and condentsir or see if there rust on the migneto clean it with fine sand paper if all that works and you done very very well and starts you did it . you welcome santa. marry chrismas

If it won't run without choke, then it's not getting enough fuel. You probably either have a clogged jet in the carb, or you have an air leak somewhere that's allowing air to dilute the air/fuel mixture.

Unless a gasket suddenly died, fell apart, and left a gaping hole, a sudden failure like that is probably a clogged jet.

I'd clean out the bowl on the carb and hose the jets out really good with carb cleaner. If you have it, hit the jets up with some compressed air, too. While you're in there, make sure the float isn't sticking and the fuel flow is good.

Sounds like you will need to clean your carburetor.
Be sure to use compressed air to blow out all the fuel and air passages.
Sometimes you can get by with priming the carburetor a few times, 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.
If the mower/weedeater is over a couple years old, then I also 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.
When you clean your carburetor and remove the jet screws, You will first seat the jet screws and count the number of turns it takes to seat the jets from their original position.
That way when you go to put the jets back in, you know how many turns they were in/out.
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I hope this helped

The jets are ajustable, by turning the center or outer ring of the jet to the left or right you will open or close the pressure to the jet. I hope this helps.

Sounds like you have an air lock. Loosen the union at the pump, turn jets on, air will escape and then tighten back up.

2 possible problems:
a) Jets in carburettor are clogged. Clean out the carburettor and jets thourougly. Write down the settings of air and idle screws first to dismantle ( count the turns to full lock up the screws. DONT apply much force ).
DONT scratch jets with an iron wire or something like that, use only Carburettor cleaner!
b) Ignition timing is wrong. Here, 2 possibilities:
Sparkplug is dirty or worn, replace it.
Key in flyweel is broken. Remove the flywheel, check the key...

Hope this helps you in the right direction for your solution...

Cleaning a carb will not change the jetting. The problem is in the pilot jet. This jet regulates the idle. Pull the carb off again and re-clean it. Remove the air screw and the throttle screw and spray carb cleaner into every hole you can find. Pay special attention to the air screw hole. Now put both screws back in the holes they came out of and turn them inward until they LIGHTLY seat. Now back each screw out one and one half turns. You are back to factory settings now. Get the pilot jet cleaned out and the bike will idle.

Hi there and welcome to fixya!

Here are some tips that may help:

1. Make sure plugs are clean and you're using good fuel quality. (tank should be clean of water moisture).

2. Turn the air-fuel mixture 2.5 turns out. This is assuming you haven't replaced the stock jet size. If you have increased the jets. Start at 1.5 turns out, if air filter is clean and free flow, you may use 1 turn out. Turn out or inward to make minor adjustment.
Usually experimenting with the air and fuel mixture would do the trick.

Let me know if this helps.

-levibit

Hi mikelapt
You will have a carby problem. When the choke is one, and different fuel circuit is used. When you turn off the choke, you go back to the idle circuit of the carb is used, when under throttle, main jets kick in. You probably have a blockage in one of these circuits. Strip the carb down, clean with carby cleaner, blow out all air circuits and jets with compressed air, then setup the idle mixture and tick over speed. Always work with fresh fuel, and drain off, discard any fuel older than a couple of months. It goes off, and turns to a gel  like substance that blocks up your carby. Hope this has explained your problem. Happy to talk to you more about it. A FixYa vote is a great reward for for my time taken to explain this to you. Cheers
regards robotek