sajuuknightfall

hello guys need some help here. my xb18pro manual has no explainsion as to what the factory settings is for the low end. it has for the high needle.

1QwkSport2.5r

Considering 'factory settings' a subjective term, I dont use it. Instead, I say open the carb to full WOT, screw idle needle in until it is lightly seated and back the needle out 2.5-3 turns. This will most likely be too rich for a decent majority of engines out there, so you may need to start it at part throttle if it doesnt catch right away on prime. If the threads on the needle are SUPER fine, back the needle out 4-5 turns, though I doubt this is the case.

Basically, open the needle up until the engine starts and idles, prime it good on the first start.