YS Engine YSS2002 Cylinder Head for 56SR Top End  [YSS2002]

Replacement Cylinder Head for 56SR

This RC cylinder head is produced as a direct replacement for the 56SR top end assembly. It restores head sealing and compression where the original component is worn or damaged, and is supplied as a spare part for hobby engine maintenance.

Installation notes: ensure mating surfaces are clean, start fasteners by hand-threading before final tightening, and follow the engine's recommended service intervals. Do not overtighten; check that the head gasket seats correctly and that cooling passages are aligned when reassembling.

Tuning and service role: changing the cylinder head is a standard top-end service to recover compression and steady running. After fitting, carry out run-in checks such as idle stability, compression feel, and operating temperature to verify the repair delivered the expected result.