Hi, Newbie with info, I was looking for a MS880 manual and yes you have it here, very good, there is a number of items not in the manual as far as tuning base settings go on the various carbs that are fitted to the Stihl models, I'm posting the (TECHNICAL REFERENCE GUIDE) which has all the various settings for most of the Stihl range, all your carb settings, the MS 880 carb setting for the diaphragm lever seams to be evasive to say the least but level with the body of the carb is the way.
For those of you whom understand the complexities of various spring pressures versions of springs for various performance levels and uses this doesn't apply obviously.
Nice site, Cheers.