On a kazuma 50cc engine carb adj screw location

That is the mixture screw. Turn clockwise to get a leaner mixture, counter-clockwise for richer. For initial setting, try with the mixture screw open 1/4 turn. Start the engine and adjust the mixture screw for good running. After it is warmed up, lean the mixture until the engine starts to miss and then turn the screw about 1/8 turn CCW

Gently turn both carb screws in all the way. Then turn each out one turn. The fast screw is marked with an H and the slow is marked with an L.

at your local Kazuma dealer

i have just got a kuzma meerkat 50cc av cleaned all the carb out washed the tank cleaned all the pipes thers a spark but it still wont turn over the only time it will run is wen a pour petrol in the carb from the top into were the pin coz in the carb eny idears eny help or idears wiil be most welcome

One adjustment screw (probably Phillips-head) is the Idle speed adjustment screw. Turn it in, to increase idle speed (it moves the throttle plate)...turn it out to slow idle speed down. The other 2 screws are the Low mixture screw and the High mixture screw. The L screw is closest to the engine and is used to adjust the engine at IDLE. The H mixture screw is to be adjusted when the engine is at wide-open throttle to get the proper RPM's....not too little and not too much. Here is a tutorial by Zama carburetor reiterating what I have just told you and HOW to go about your adjustment.
http://www.zamacarb.com/tipspage.html

sounds like carbeurator problem. could need cleaning or adjustment. some carbs have spring loaded adjustment screws for richening or leaning the carb look for the lower adj screw run the machine while turning the screw clock or counter clock wise and see if it smooths out , newer carbs dont have these screws and may have to be replaced or soaked in industrial carb cleaner.

I didn't think there was an adjustment in there, the air fuel screw?? Is it outside? Are there 2 screws outside? Is it Mikuni? If it has 2 adj screws outside, turn both in all the way, then back them out 1 1/4 turns each, this should get you running, some minor adj from there should make it right. But I could have sworn there was no adj on those, and the only way to adjust it is to change the jet. Check it out.

start by synchronizing your throttle plates. Honda calls the next step the "idle drop procedure". u need to know if you have fuel adj. screws or air adj. screws. fuel screws will be on engine side of carb slide, air screws will be on airbox side of carb slide. start leaning out mixture, (turn in fuel screw, turn out air screw. idle will increase so keep adjusting idle back to spec.after each turn if needed. Adjust about 1/4 to 1/2 turn at a time on each carb until there is no change in idle, then richen up mixture by one half turn. If u sync throttle plates first then follow this procedure, there should be no hesitation when you "blip" the throttle, and after revving it should return to idle smooth,

When u adj a kohler carb you adj fuel not air. Always adj the high speed then low speed. Then adj the curb idle. 1.5 turns out is a good starting point. Then tweak it after its warmed up. Hope this helps

It has nothing to do with the adjustments, what is going on is your float is stuck in the carb , you will have to take the float bowl off , float is sticking than you will have to try and clean the needle and seat valve.