adjusting my carb

[Jay Lingenfelter]

first i wanna start by saying im a chef not a gearhead,lol.my issue isi put a pwk 21mm with power jet on my 66cc chinese **** motor and i cant seem to get it runnin rightwhen it gets to bout 1/2 throttle it bogs down i have a 115 jet in it now.none of the vents are capped.is it possible it could be the air gas screw and if so how would i adjust it

 

[Greg58]

Jay you need to learn how to read spark plugs to tune a 2-stroke, reading the plug is the old school racers way to get the right jet. The darker the plug the richer the mixture, a lean mixture is fast but creates heat so be careful. I would test a smaller jet first.