50ST Series Carburetor Gasket YSS1020 - YS Engine  [YSS1020]

50ST Series Sealing Gasket

A direct replacement sealing element for the carburetor mating face on 50ST-series RC carburetors, this gasket restores the seal between parts to help keep idle steady and fuel flow consistent during normal running and tuning sessions.

Installation is simple for hobby operators: carefully dismantle the carburetor, clean and inspect the sealing surfaces for old gasket residue and contaminants, lay the new gasket flat on the mating surface, and reassemble with the original fasteners. Once reassembled, check for air or fuel leaks and confirm idle stability before full-throttle testing.

When tuning, a reliable gasket removes unwanted air paths that can skew needle and idle adjustments, making mixture changes more predictable. Inspect the gasket during routine service and replace it if you see fuel seepage, visible damage, or notice compression loss at the joint.