Yamaha Pocket Bike

I bought a new bike 47cc Yamaha pocket of a company called Too Fast Motors and started to work but when I hit the throttle, it dies sometimes I have tried it with the clutch open, it accelerates rapidly WOT to pull so when I start it just goes for a couple of minutes, the mixture of oil, I used 91 octane and 2 Castrol stroke that was recommended and I will do anything to get this thing and running all the answers will be appreciated

Take it back to them. Oh, wait ... Are you using an old gas ...?
You can remove the carburetor and soak in Chem-dip for a few hours ... Wash the carburetor off and blow the airways.
You can get the chance .. you may have an air leak, too.

Clean the spark plug and heat under a hot gas flame.
Once the engine starts, remove the starter, never leave the shock for a few seconds.
Good luck

check the carb jet to a passage blocked. Could also be a small contribution Leake.

Change the spark plug. Keep a spare spark plug. If you leave the choke too long because the plug. You will not get anywhere until you change it or wait until it dries.

If it is new, it must have a guarantee.

Open the choke.

carbs arn't u get enough gas needed to adjust the gas and air intake on the carb