brokenbudget
Addicted to ArboristSite
I used my sons expensive USC to clean a carb and found that worked wonders. I wonder though if there might be a problem with any internal carb parts that are not metal. I recently rebuilt a Stihl 015 Walbro HDC carb and there seemed to be a rubber type plug under the checkvalve(I believe that's what it is). Wouldn't the USC dissolve it?
the ultrasonic won't hurt anything itself. depends on what chemicals you're using.