Whilst I was working on the 2009 Uly after I removed the control cable, I noticed the cam on top of the servo motor under the tank cover wasn't in the right place.

Long story short, I removed the unit, opened the case and found that the "half-gear" has opened-out and no longer limits the travel of the main cam/cable.

Photo here - at the top left - the black gear has a tab (visible at 3 o'clock sitting above the edge of the half-gear underneath) which should rest behind the tab at 11 o'clock on the half-gear.



Another angle - see where the tab has worn and moved out from the black gear.


Found a temporary fix on BuellXB.com http://www.badweatherbikers.com/buell/m ... 41661.html

The fix - drill and screw in a grub screw. Make sure it is far enough in or it hits the pillar on the upper case (DAMHIK).

All working again but I've sourced a replacement motor - tip from BuellXB.com https://www.buellxb.com/forum/showthrea ... e+actuator

which will need a bit of fettling but is a replacement for the factory unit (S1038.2AAA). Dorman 911-912 is used on Fords and Lincolns. Bought off Amazon US for $64 shipped to US - a friend is bringing back for me!

TBH I think the gear failed due to my hamfistedness, trying to remove the cable. I will unscrew the whole assembly from the airbox next time, so I don't manually rotate the cam too far (and break it again....)

Standard practice is to bin the servo, wire the valve fully open and turn off the error checking.
AMC does nothing for performance, it's just a noise emission device.

_________________
Mithered ta death.
92 MB
96 S2T
98 S1W
00 M2
01 X1
03 P3
10 CR

Thanks Maz.

When I got the bike it had a "Stealth" exhaust (that woke the dead) and the valve was disconnected/mapped out in ECMDroid.

Might try with/without on the now standard exhaust, but I've flashed out £48 on the Dorman box now and will bodge that in! Erik had his reasons....

Yes, noise emission homologation.

_________________
Mithered ta death.
92 MB
96 S2T
98 S1W
00 M2
01 X1
03 P3
10 CR