January 28, 200917 yr Hi all, Can anyone tell me what the two screws on the carb are for? As you are looking at it there is a biggish one in the middle? and a small one to the left hand side? One for the air/fuel?? Bike is a 2001 280cc What should they be set at?? Cheers.......
January 28, 200917 yr big one in the middle (should be on a spring and have a knurled edge to grip it with your fingers) is the tickover screw, screw it in and it makes it higher, out makes it lower. the other one to the left is the air mixture screw. not 100% sure which way does what because ive never felt the need to touch it. All the best Tom
January 28, 200917 yr Hi all,Can anyone tell me what the two screws on the carb are for? As you are looking at it there is a biggish one in the middle? and a small one to the left hand side? One for the air/fuel?? Bike is a 2001 280cc What should they be set at?? Cheers....... The big one in the center of the carb body is the idle or tickover screw and raises and lowers the slide slightly to gain/lose RPMs. The small screw to the left (near the reedcage/manifold side of the carb body) is the fuel mixture screw (on the right, towards the airbox boot would be an air adjustment) and is used to fine-tune the tickover/off-idle response. You can set that by (engine warmed up) quickly blipping the throttle off idle and turn it in/out about 1/8th turn at a time to get the best response and that's where it should be set, on that day, for those riding conditions. Cheers. Jon
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