O.S. Engine OS45514010 Gasket Set for FS-120S FS-120S-E  [OS45514010]

Gasket set for FS-120S series

This O.S. Engine gasket set is a compact replacement kit designed to restore sealing surfaces on the FS-120S and FS-120S-E RC engines. It focuses on basic maintenance needs, helping to prevent leaks that affect compression and idle stability without altering engine performance specifications.

Installation is straightforward for anyone familiar with small glow engine service: remove the affected head or crankcase components, replace worn or flattened gaskets with the matching pieces from the set, and reassemble using correct torque for the engine screws. Inspect mating faces for burrs or old gasket residue and clean before fitting new gaskets to ensure a proper seal.

In tuning and routine upkeep, fresh gaskets are a maintenance item rather than a performance upgrade. Use this set when you suspect compression loss, spot fuel seepage, or after disassembling the engine for repairs or piston/cylinder servicing. Keeping sealing surfaces in good condition supports repeatable running behavior during setup and testing.