Good news!!!!! put the carb back on and now it runs for a little (no starting fluid needed. However it shuts down after a couple minutes and will not idle. What I have noticed is that the main jet needle keeps gumming up with this yellow film. Once I clean it and put it all back together, it will run again for a little and the same thing happens. What could be gumming the needle up? I have emptied the tank and put new gas in....

 

Your getting there!!

Those 2 "screws" in the bowl need to be removed and cleaned... and carb cleaner sprayed thru the holes in the carb..also the screw (its a jet) in the back also screws into a jet holder...That needs to be removed and cleaned... it has holes in the side of it that you must be able to see light thru..

Do you have a fuel filter on the quad? if not get one or get a new one.. that is how more junk gets in the carb...

 

Well it looks to be something with the main jet needle. It keeps getting stuck...... I take the carb off and take the top cap off and remove the diaphram. The needle slides through a little hole in the slide (attached to the diaphram). Once I free up the needle and put it back together. The atv starts and runs for about a minute or so and then dies. I can't rev the engine or it cuts out. I have cleaned everything several times. Should I just get a new carb?

 

The inside of that carb looked pretty bad... if you cant get rid of all the crusty deposits then you need a new carb... Those will flake off and clog a jet pretty quickly..

 

It looks pretty clean now.....any ideas for getting that needle to not stick? Does that sound like it could be the problem?

 

Is it the needle that gets stuck in the main jet? or the slide getting stuck in the bore?

 

It is the needle that gets stuck in the pinhole that it goes through (in the slide)before going into the jet .....

 

The needle is supposed to stick out the bottom of the slide and be held in position by a small clip and a plate in the bottom of the slide...The needle isnt supposed to stick in the main jet and slide in and out of the slide..

Is that whats happening? or am i confused?

 

No, then it is working correctly. Not sure why taking it apart and putting it back together makes it work for a very short period...... I thought that the needle needed to slide through the pin hole freely.

 

Maybe look for cuts/cracks (very small ones) in the diaphram..