Replacement Cylinder/Piston for 65AX - OS26903000 by O.S. Engine  [OS26903000]

Replacement Cylinder/Piston for 65AX Glow Engines

Designed as a service replacement for the 65AX family, this cylinder and piston assembly replaces worn reciprocating components to recover compression and improve combustion consistency. It is intended for engines showing wear that impacts performance.

Delivered as a single assembled unit to simplify maintenance, fitting this assembly is a routine part of an engine overhaul and will influence ring seating and combustion behavior. When installing, verify crank alignment, inspect sealing surfaces carefully, and follow the manufacturer's break-in and tuning instructions to stabilise operation.

Treat the assembly as a key part of the engine's sealing system during tuning. After installation, check needle positions and idle stability while running, and observe oil and fuel consumption as indicators that seating is progressing.

Choose this unit when worn internals reduce compression or to refresh an engine before further tuning, and always complete a correct break-in and tuning validation.