As my bike started to misbehave in the carb dept (fuel delivery issues), I decided it´s time for an overhaul. Time for a Raptor, time for that other muffler that came in a box with the bike, (and time for some forward controls and some new bars, covered elsewhere in the forum).
Now..this bike has had a BSM muffler previously (the one in the box). It now has the stock exhaust, and behaves nicely with it. Now, I was thinking: If I swap the muffler, I will likely need to re-jet the carb. So I look at the jets and find a 47,5 (machine-stamped into the brass) and the other jet has some marking (hand-engraved) that says 180.
A)Puzzled. With a 180 jet, the bike should have run way past rich with the stock muffler, wouldn´t it? Anyway..looks like I have a big enough jet to cater for the slashcut BSM muffler? I mostly ride at (or near) sea level..
B)Needs to be said, that the bike also has a conical and oblong air filter. No markings, but kindof red weave under the netting. And...in the carb inlet, there is an thin divider that looks kinda homegrown.
Is that divider something that might have come with the air filter? Should I keep it? What good does it do, if any? It does not reach all the way into the slider, it stops about 3mm further out.
Ideas?