Trailboss wrote:
You maybe able to adjust some of it out with your air screw, but more than likely you will need to raise the needle by lowering the clip position at the top of the needle this will richen the mixture. The main jet will be fine because thats only wide open stuff and by the sounds you arent reaching that yet
I agree mainly with TB though you don’t have an airscrew, you have a fuel screw, this is an important difference when trying to tune your carby.
As far as the needle goes, this can get confusing depending on which way you look at it. To raise the needle and lower the clip as TB suggests you need to put the needle circlip in the next slot down from where it currently is. Typically there are 5 slots at the top of the needle, 1 being at the top and 5 being at the bottom and 1 being the leanest, 5 being the richest respectively.
The current jetting will most likely be casuing ‘lean bog’ and a subsequent little backfire or pop. Adjust your fuel screw first and then have a crack at the needle too.
