At high altitudes these levers may have to be turned in a bit more i.e. clock-wise, to obtain a leaner mixture as there is less atmospheric oxygen than at sea level.
Kumphakamo ophezulu ezi leva kufuneka zijikwe kwakhona zijikeleze ngendlela eyiyo ukufumana umxube wokungqiyama njengomoya omncinane woxinzelelo kunenqondo lwaselwandle