YS Engine YSS1020 50ST Carb Gasket  [YSS1020]

Sealing Plate for 50ST Carbs

This gasket is a direct replacement sealing plate for 50ST-series carburettors, made to re-establish an airtight interface between the carburettor components and support consistent fuel delivery during running and setup.

To fit the gasket: strip the carburettor carefully, clean the mating surfaces and remove old gasket material, seat the new gasket flat on the mating face, and reassemble with the original hardware. After refitting, inspect for any leaks and confirm idle behaviour before conducting performance runs.

During tuning, a properly sealed carburettor prevents stray air from altering needle settings, so maintaining the gasket in good condition helps preserve repeatable mixture adjustments. Check the gasket regularly and replace it if you detect fuel leaks, visible wear, or sealing failure.