RE: Super Tiger 90 Low Speed Needle
The blow through method works well if you know what your looking for. Otherwise Install an idle bar plug, this will let the engine run ritcher without dying, start it and set the high needle. Then start pulling the power back slowly. It should start sputtering about half throttle. All ST 60-90 carbs will be a little rich at 40-70% throttle if the slow idle is set right. Lean the slow needle until it dies out at low idle, then back it out 1/8 turn. It should idle several minutes with a slight sputter when full throttle is applied.