YS Engine YSS2005 Cylinder Liner — Replacement for 56SR Engines  [YSS2005]

56SR cylinder sleeve for rebuilds

The YS Engine YSS2005 Cylinder Liner 56SR #S2005 is a replacement sleeve designed for RC glow engine rebuilds and maintenance. It creates the running surface inside the combustion chamber and is suited to models marked 56SR.

Installation restores compression and bore integrity when the original sleeve is worn or damaged. Ensure correct seating and axial alignment in the case; minor rework or light lapping can be required when long-term service has altered dimensions.

When tuning and assembling, check piston and ring fit, use any specified seals, and perform a controlled break-in per standard RC glow engine practice. The liner is a maintenance part intended to renew bore condition rather than to increase power output.

Replace the liner during rebuilds when bore wear is apparent, and follow engine-specific reassembly and break-in guidance to secure dependable performance.