I have a husky 240e saw and i just rebuilt the carburetor and it will crank up and go dead and i pull it a few more times and it will do the same thing so what should i do now and i have blowed it out real good

Ok, let's test it. We need 3 things for a motor to run. Fuel, spark and air/compression.

This first test you always start with as it will eliminatethe need to test for spark and air.

Spray some carburetor cleaner, gum out, into the plug hole

Reinstall the plug

Spraysome into the carburetoras well.

Now give 2 slow pulls, then pull it as u normally would.

If it starts but only runs for a few seconds, you know it's definitelythe carburetor... if that's the case then it needs to be adjustedwith the adjustment needles on the carburetor, which I can help you with as well.

Let me know how you made out

Brian

Is this a Chainsaw based question as I fear you have the wrong category.

Yes that saw does exist..! What is your question regarding it.?

Can be located on the carb.! it is on the left hand side of the saw below the primer bulb but above the L/H screws

Sounds like it will crank but just won't start. Almost always a carburetor adjustment if your gasoline is not deteriorated (old).
Pull the spark plug and prime the cylinder with a teaspoon of gas. Try again. If it fires in a few pulls and then won't fire on the next few, your carburetor isn't supplying enough or any gasoline.

The primer pulls fuel from the metering side of the carb, if there is no fuel here it is because either the fuel filter in the tank is blocked, or the fuel hose is trapped, or the non return valve in the carb itself is stuck, this can happen if the saw has been left with a rich oil mixture left in it.

It will be set at base settings, you will need to fine tune from there, the mixture screwsrequire a special tool to adjust them part no. 530035560 the screw heads have a star not a screw driver slot, max free running speed should not exceed 12500 +- 500 rpm they are not the easiest machine to tune due to the X Torque cylinder design.

Check there are no kinks in fuel line.
Make sure that the air filter isn't blocked.
Check the throttle cable is operating the throttle plate in the carburettor ok.
Ensure chain isn't too tight.
The carburettor should be a tight fit on the air inlet manifold.
It's possible that some of the jets could be blocked in the carburettor. You can try and clean these with compressed air but ensure you remove any seals gaskets, springs on the diaphragm pump , primer bulb etc as they can be damaged by the pressure.
You can also buy an aerosol can of starter fluid at your local autoparts store. This is sprayed into the carburettor to clear any partial blockages.

Its not an idle screw adjustment issue, it is a mixture screw adjustment issue, unfortunatly there is a special tool to adjust the mixture screws, pt no. 530035560 ( available from Hysqvarna dealers ) once you have this tool you can make an adjustment to the L screw on the carb, undo ( anti clock wise ) this screw ten minutes on a clock face ,this will richen the muxture, and should make it more stable on idle.

The symptoms indicate lean running, so check the fuel filter for plugging and the fuel lines for decay or other damage. Husky seems be having troubles with our ethanol treated fuel and may require some warranty attention. We have a year old 435 Husky that would not start after about 3 days of excellent running--warranty replaced the carburetor which seems to have us working well now. Good luck!