YS Engine YSS7103 Head Gasket Compatible with 61ST Series  [YSS7103]

Technical Note: 61ST Head Gasket

YS Engine YSS7103 is an aftermarket cylinder head gasket intended for 61ST-series model engines, designed to seal the head-to-sleeve joint and stop blow-by under compression.

Fit this gasket during head removal procedures or when compression testing indicates a loss. Make sure the mating surfaces are free from burrs and residue before fitting to guarantee consistent engine performance.

Installation notes: clean the head and sleeve sealing faces, position the gasket evenly, and tighten the head bolts to the engine manufacturer's recommended torque in a crisscross pattern to avoid distortion. The gasket's role in tuning is primarily sealing reliability that supports repeatable compression and consistent warm-up behavior during jetting adjustments.