Doug A wrote on 06/23/08 at 13:24:00:. and far as I can tell... turning the pilot screw all the way in or 5 turns out does NOTHING. I can't tell that the engine in increasing or decreasing with any of the adjusting.
Thanks.
I have been frustrated by this too. I have fiddled with that thing endlessly and could never hear a difference. Recently, I started removing things from inside my muffler. Now it sounds pretty cool, but I was getting exceptionally loud blasts every time I'd decelerate.
Tonight on a whim I stopped at a Yamaha shop to see if maybe they had a Mikuni jet laying around. Local Suzuki doesn't stock them. Yamaha had 5 huge bins of them. Every size from 0 to howitzer. So I bought a size 50 pilot and crammed it in the carb after mutilating several screw drivers. PRESTO! Now I can tell a definite difference when I turn the pilot air screw. Too far out, I get smoke and stumbling. All the way in tight, the idle is still picking up a little. So I set it at 3/8 turn out and pulled more muffler off.
I figure I'll stike a balance soon. I'll see how it does on the highway tomorrow.