So let me get this straight...

Nerp,
You're just having a hard time of it, aren't you? Let's see if we can get you going.
An internal combustion engine needs three things to run, well, it needs more than three but the essentials are: Ignition (spark) Fuel and Air.
You need to confirm that you have those before we proceed into troubleshooting.

Spark: Remove the spark plug from the engine. Connect it to the plug wire and lay it against the cylinder head cooling fins. With the clutch engaged, push the bike forward and look at the tip, the electrodes of the plug and you should see a spark, albeit a small one, jumping between the tip and the little 'L' shaped thing bending over it. The plug must be securely grounded against the engine to do this test. If all your wiring is correct and the CDI and magneto are performing, the plug will spark. If not check your wiring connections against the diagram below and get back to us if you still have no spark.
Fuel: The fuel tank petcock (valve) must be on or open. Confirm this by disconnecting the fuel line at the carburetor and checking to see if fuel is flowing from the tank. If so, you're good, if not the fuel petcock filter might be clogged or the petcock is not open. Confirm you have fuel flow.
Air: The little lever on the right side of the carburetor is the choke. Cold starts often require either a fully closed choke or just a little open. The choke is wide open with the lever pushed down as far as it will go. That is the position it needs to be in after the engine is running.
If the throttle cable is hooked up correctly and with the air cleaner off, you should be able to look into the 'throat' of the carburetor and see a dark colored cylinder move up and down when you twist the throttle. That is the 'slide' or barrel that operates the needle valve which allows fuel to enter and mix with the airstream being drawn into the carb.
Do these simple tests to confirm you have all the necessary ingredients for combustion and get back to us with the results.
Tom

VENICE BOY said:

Wow Tom... you're fast!!!

Click to expand...

That's what she said.
Tom

Nerp,
Did you check your wiring with the diagram?
The idle screw only adjusts the idle speed. It plays no part in the engine running. Adjust it inward to increase idle speed; outward to slow it.
Some engines like a little prime on a cold start. The button next to the idle screw actually sinks the float inside the carburetor and allows a little extra fuel to flow for easier starting. Oddly, all engines don't need it but atmospheric conditions vary and priming does help in some situations. Depress it for a couple of seconds then go pedal.
Tom

I typically go a little lighter on the oil but 16:1 isn't bad. If it is fresh fuel. Mixed fuel has a short shelf life unless it has a stabilizer in it. A couple of weeks or so is the suggested life. The engine will run but not as good as on a fresh batch.
Prime, partial choke, pedal and give the throttle a little twist. When, the engine starts let it warm a few seconds then open the choke, lever down, ride for a while to get the engine up to operating temperature and enjoy.
Tom

Nerp,
What is the outdoor temperature where you are?
Tom