I have a problem with my boys kazuma meerkat 50cc 4 speed semi. When the throttle is pulled right back the bike cuts out. Have adjusted the air screw and tick over. Can get the bike to tick over with air screw opened but when throttle is pulled back bike cuts out. If i tighten air screw in then it ticks over but the bike runs stuttery but when youy accelerate it doesn't cut out. Checked all hoses etc to see if too much air was getting in. Can anyone please try and help me sort this as its doin ma head in and ive been at it for around 10 hours now.Can get the bike to run but not the same as when i got it. Please help....Thanks[img]i/expressions/face-icon-small-confused.gif[/img]

 

You adjusted the air screw but what about the idle screw? Check air filter to make sure its not dirty. Sounds like idle screw is out too far.