Secured by two or four screws; holds the diaphragm assembly in place. Vacuum Diaphragm:
JIS screwdriver (not Phillips), carb cleaner spray, compressed air, 0.5mm guitar string for passages.
Silas was not a man of the digital age. He was a mechanical relic hunter, and the bike on his lift was a rare, mid-sized vintage import that had been sitting in a barn since the late nineties. He had spent weeks trying to get the machine to breathe. It would idle, but the moment he rolled on the throttle, the engine would bog down and die, starving for the perfect ratio of air and fuel.