Replacement O.S. Engine OS23181100 Carburetor Body 21K/35AX  [OS23181100]

Service replacement for 21K & 35AX carburettors

The O.S. Engine OS23181100 carburetor body is supplied as a replacement component for carburettor assemblies marked 21K and 35AX. It functions as the principal casing that retains throttle and idle circuits and mounts to the carburettor linkage points.

During service, careful transfer of needle assemblies and gaskets will preserve sealing surfaces and alignment. Remove the carburettor, exchange the body, then reassemble while ensuring the linkage geometry and mounting studs sit correctly to avoid undue wear.

Attention to gasket condition and correct seating reduces the risk of air ingress and helps the carburettor retain steady idle and mid-range performance. Use this body to replace worn housings or to restore a carburettor for extended reliability in regular running.

Work in a clean area, replace any perished gaskets, confirm throttle movement across its range, and carry out a bench test to confirm serviceability before refitting to the engine.