Cleaning exhaust silencer on 2012 ST290

[pmccand]

I have a 2012 ST290.  I looked in the service manual, and there is a reference for removing and re-packing the silencer packing fibers on the newer models  However, on the 2012 model, I am not sure this can be done.  It is of a different design than what is shown in the manual.  On my bike, there IS a philips screw in the correct location that would indicate it is possible, but when I remove that screw, nothing comes apart.  Does anyone know if the silencer tube can be removed for cleaning or repacking on the 2012 model?

  

[sectionone]

On mine I cut a window, repacked and closed it back up with an aluminum sheet metal cover with a rubber gasket and rivets.

[pmccand]

On 1/21/2026 at 9:06 PM, sectionone said:

On mine I cut a window, repacked and closed it back up with an aluminum sheet metal cover with a rubber gasket and rivets.

Not exactly the solution I was hoping for.  But yeah, I guess they are not too serviceable.

[tony27]

Pretty sure that after the first 2 year Bultaco models the muffler wasn't serviceable until after the rear tankers

[faussy]

On 1/22/2026 at 3:06 AM, sectionone said:

On mine I cut a window, repacked and closed it back up with an aluminum sheet metal cover with a rubber gasket and rivets.

Did exactly the same on my mid 2000s shercos. I know guys who cut it completely in half down the seam, repacked it and then took it to a local engineering shop who welded it back together.