My NU50MC is far too smokey especially soon after starting.
1. Obvious causes could be fuel/air ratio or too much oil injection - but how do I adjust these?
2. It'd be even better if someone could explain how the whole oil injection and carb set up works.
Maybe if someone has the NU50 shop manual (I can't get one here in UK), they could send scans of relevant pages to: firstname.lastname@example.org
3. Also, is there a vacuum takeoff point on the carb for installing a vacuum gauge?