Back Plate Assembly for DZ140 Engine, Model YSF2128A - YS Engine  [YSF2128A]

DZ140 Rear Case Back Plate

This YS Engine back plate assembly fits DZ140-series engines and is intended as a service spare to replace a damaged or worn rear cover. The component is provided ready to install and is identified by model YSF2128A.

The assembly restores the rear sealing face and mounting interfaces, helping to preserve correct alignment for exhaust and drive features. Check mating surfaces, bearings and seals for wear or distortion before installing the replacement to avoid misalignment or premature component stress.

Replacing the back plate is part of routine maintenance for DZ140 engines; follow the engine maker's disassembly and reassembly process. Hand-start fasteners, then tighten to the specified torques advised in the manual. Conduct a bench rotation assessment after fitment to confirm smooth operation prior to refitting in the model.

Provided as an OEM replacement part, this back plate assembly helps reinstate rear-case function and mounting geometry on DZ140 RC engines.