YS Engine YSF1952 Carburetor Body - 120NC Replacement  [YSF1952]

The YS Engine YSF1952 carburetor body is an aftermarket spare intended to replace worn or damaged bodies in the 120NC glow engine family. It houses the fuel metering components and throttle linkage, and is supplied as a single replacement unit to reinstate correct carburetor assembly.

The component locates the needle valves, throttle shaft and inlet passages that manage air and fuel flow. Body replacement is commonly required after extended use or if thread damage, inlet wear or machining imperfections begin to affect mixture control and idle stability. When servicing, ensure mating faces, O-ring grooves and throttle shaft bearings are clean to avoid leaks and uneven throttle response.

Fitment notes: remove the carburetor from the engine, record needle positions and throttle settings before taking it apart, transfer the needle valves, throttle shaft, springs and any bearings or seals into the YSF1952, then assemble and bench-test to confirm smooth operation prior to reinstalling.

Tuning note: installing a new body does not change jetting itself, but replacing a degraded body restores a reliable mounting for precision needle tuning and consistent engine performance.