This regulator body B is offered as a replacement enclosure for the YS Engine YSS2037 series, designed to match the 56SR designation and provide reliable fitment in RC regulator assemblies.
Use the part to substitute a worn or cracked regulator housing on 56SR regulator units. Verify alignment of mounting bosses and sealing faces before final assembly, check original seals and linkage orientation, seat the housing evenly, and tighten screws to the manufacturer's specified torque to prevent distortion of internal components.
During routine servicing and setup, the body acts as the main structural shell; replacing it can restore proper control linkage geometry and reduce the risk of air or fuel leakage in regulator systems. Confirm compatibility with your existing 56SR-class regulator components before fitting.
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