Carburettor Restrictor Set Compatible with DZ140 - YS Engine YSF2193  [YSF2193]

Carburettor flow restrictor for DZ140

This restrictor set is an RC carburettor component marketed under the YS Engine YSF2193 designation and aimed at DZ140 glow engines. It installs as a replaceable insert in the carburettor throat to modify airflow and allow more precise fuel/air mixture control during idle and throttle transitions.

Used for precision tuning rather than claiming large performance gains, the insert refines how the engine reacts to needle adjustments and helps steady low-speed operation. Because the part is intended for fine adjustments, it is typically applied when subtle mixture or idle corrections are necessary during track or bench setup.

Installation should follow the carburettor and engine maker's instructions; the component is an accessory for RC model engines and must only be fitted where the DZ140 carburettor design accepts a restrictor element. Confirm physical fit before use and observe safe procedures for handling glow-engine fuels.