YS Engine YSS2047 56SR O-Ring Replacement Set  [YSS2047]

O-rings for YS 56SR Engines

This O-ring set provides replacement seals for upkeep and part swaps on YS 56SR model engines. The components are supplied as service items for RC engines and are not performance upgrades.

Compatibility is confined to the 56SR family as indicated by the product code; only fit these rings where the original specification calls for them. Prior to fitting, examine sealing surfaces and grooves for contaminants or damage to ensure effective sealing.

Fitting guidance: position each O-ring without twisting, apply a small amount of suitable lubricant to assist seating, and avoid stretching the rings during fitment. After assembly, carry out a gradual run-in and confirm there are no leaks before full use.

Tuning impact: O-rings help maintain compression and prevent air or fuel leaks; they support consistent engine response during tuning but do not change tuning parameters on their own.