Husqvarna K750 concrete saw

[Fatboy2017]

Good morning,  I acquired a Husqvarna K750 concrete saw in with a package of saws all none runners. All saws are up and running including the K750 which was low on compression suffering from usual lack of maintenance, filters complete trashed or missing and air deflector missing so ingested dust and poor cooling causing a partial seizure. All rebuilt and running well but somebody prior has messed with the carb settings and the workshop manual that I have does not have basic carb settings or method of setting carb. It just says 'carb set in factory, do not adjust'   Can anybody help with the settings, particularly the 'H' setting?  It seems to be a bit touchy to set and I don't want to lean it out. I've set it very rich at the moment but a basic setting would be good.

Thanks in advance