Questions & Answers for: Harley Davidson XLH 1000 Sportster idle screw

...idle mixture screw and try it all over again. Eventually, you will get the slow jet right where you need it to be. Now, tuning the high or main jet will have to be done on the road. Find you a long ...

...idle mixture screw then come back out about 1 1/2 turns. If it's an S&S carb, gently bottom the mixture screw and come back out about 3/4 turns. This is a good starting point for the ...

...idle, turning screw counter clockwise will richen mixture and raise idle. You need to balance the two adjusting screws to obtain an idle of 950-1000 RPM then back out air/fuel mixture screw 1/4 turn, ...

...screw the plug in all the way, otherwise it will contact the flywheel and scratch it badly, rendering it useless. It's really important to set the idle at 2000 or above, to make sure the engine is ...

backfires 78 sporster with a super b carb wat adjustment points or idle? turn adjustment screw all the way down, back out 2 & 1/4 turns, then fine tune, make sure your plugs are good