DZ140 Back Plate Assembly - YSF2128A by YS Engine  [YSF2128A]

DZ140 Rear Back Plate Replacement

Made for the DZ140 engine family, this YS Engine back plate assembly serves as a service replacement that restores the engine rear cover and its interfaces with internal components. It is supplied ready to fit and carries the model number YSF2128A.

As a direct spare, the assembly restores the rear sealing face and mounting points, helping preserve correct alignment for muffler outlets and drive interfaces. Inspect mating surfaces, gaskets, and seals for wear before fitting, and confirm clearances match the original part to avoid undue stress on the crankshaft and bearings.

Installation is a standard maintenance task on RC models using DZ140 engines; follow the engine manufacturer's service steps for safe disassembly and reassembly. Start fasteners by hand to seat components and then apply the torque values specified in the engine manual. After fitment, perform a bench rotation check to ensure there is no binding before returning the engine to service.

This back plate assembly is supplied as an OEM spare part for routine service and repair of DZ140 RC engines, providing a direct replacement path to restore rear-case integrity and mounting features.