Three New TAOTAO 49cc Wont start. Two new carbs . Engine not getting gas, Have checked everything. Runs with choke or starting fuid

It sounds like your carbs are running lean. The 'hand choke' making it run better verifies this. There should be a mixture screw. Carbs are not necessarily tuned from the factory. I've gotten carbs that wouldn't even start until I tuned them. Start by turning the mixture screw in until it bottoms out. Don't tighten it, just until it barely touches. Count the number of turns so you know where it was. Then back it out about 1.5 turns. This is typically a baseline. From there, try to start it and see how easily it starts, runs, and revs. Might need to pull it out further to get it to start. Work in half turn increments. If you have issues, go back to where it was initially, and work your way up from there. You do not want it running too rich, or you will waste fuel, dilute your oil, and cause excessive bore wear. You want to get it to where you can rev up the engine without bogging.

Some carbs need a special tool to tune the carb. I needed to buy a 'pac-man' tool to tune the carbs on my trimmer.

Hello all they do have an idle jet screw which has a steel plug covering it. You can remove the plug by either taking a eye glasses flat head screw driver and a small hammer and catching the edge of plug and bend it towards center of plug and work it out or drill a small hole in center of plug , insert a screw and pull with plyers

I found that by letting the engine run for 4 or 5 hours at various speeds , seated the rings. u can also drive it for awhile to help break in the engine. u follow out the plug running it on choke. also buying the 100cc kit eliminates all problems.