Shafiq brother in Pakistan you are lucky if you find good mechanic for your motorcycle
many many mechanics are idiots and they consider theirselves more experts than company
and don't follow proper guidelines and settings of company.
For mixture setting visit this thread
https://www.pakwheels.com/forums/honda-bikes/277888-cd70-carbourater-setting
Hopefully you understand the method and even if mixture is set fine and tappets are not
set correctly bike will still run heavy feel ghutti ghutti tappets air mixture are two important
settings to get best performance out of engine
Do some talking with mechanic like telling him ustaad company recommends using feeler gauge
of .05mm to set tappets. Do you have feeler gauge he will proudly say our hand is feeler gauge :D
than say him ustaad i have heard tight tappets are harmful for engine so kindly set my bikes tappets
as that they are not tight bhale they produce light tik tik sound