Piston Ring for 61SH Engines YSR6201 Compatible Replacement - YS Engine  [YSR6201]

Replacement YSR6201 for 61SH-class engines

This component is intended as a direct spare piston ring for 61SH-size model glow engines carrying the YSR6201 part code. It is provided as a single replacement part to address worn or scored originals.

Why it matters: restoring a worn ring improves the piston-to-cylinder seal, cutting down blow-by and stabilising compression for more consistent idle and throttle response during tuning and normal operation.

Installation advice: inspect both piston and bore for damage and confirm piston clearance before fitting. Apply a light film of lubricant for first assembly and check that the piston moves freely. If fit or end gap appears incorrect, stop and re-inspect for contamination or distortion.