Right ive had a quick look whilst letting my bike drain of oil and it a JIN KE ?
Ive turned in the screw that you siad ( i thought it was the idle too as it screws into slider and its all but in to tick over but it seems to pick up better if i wind it out.
Like i said i think its down to setup and this is a new bike for him ( new hobby too) and i want him to learn how to do this so i want to make sure im right
Also its used well over half a tank of fuel in about 2 hours not caning it either does that sounds about right ?
I know some of these chinese makes can sometimes be problomatic so if i need a better make carb then thats what it needs as im a firm believer of doing it right first time
Thanks Neil