O.S. Engine OS49415000 Carburettor Gasket for GT15HZ - Replacement carburettor spare for RC glow engines  [OS49415000]

Gasket purpose and step-by-step fitting

This O.S. Engine OS49415000 carburettor gasket is an RC-scale replacement part designed for use with the GT15HZ carburettor assembly. It acts as the sealing interface between carburettor components to keep fuel and air metering consistent in glow engine setups.

The gasket's role is strictly mechanical: to sustain correct contact between faces, prevent leaks, and help preserve predictable needle and throttle response. During routine servicing, worn or flattened gaskets should be replaced to re-establish a reliable seal before fine tuning mixtures.

Fitting is straightforward for hobbyists accustomed to glow engine work. Remove the carburettor, separate the mating surfaces where the gasket sits, clean both faces of residue and old gasket material, then place the new gasket with all holes and ports aligned. Reassemble using correct screw torque to avoid distorting the carburettor bodies, which can compromise the seal.

When tuning, a fresh gasket helps stabilise airflow and fuel passages so needle adjustments produce repeatable results. After reassembly check for any fuel smell, visible seepage, or unstable idle; these signs point to misalignment, a damaged gasket, or other carburettor issues needing attention.