O.S. Engine OS49415000 GT15HZ Carburettor Gasket - Spare part for RC glow motors  [OS49415000]

Role of the gasket and fitting instructions

The O.S. Engine OS49415000 carburettor gasket is supplied as a replacement for the GT15HZ carburettor assembly. It forms the sealing interface between carburettor sections to maintain reliable fuel and air metering in glow engine systems.

Its function is to prevent leaks and keep mating faces aligned so needle and throttle response remain predictable. Inspect the gasket during routine service and renew any that show compression, splits, or signs of fuel permeation to recover correct sealing performance.

Installation is a standard procedure for experienced hobbyists: remove the carburettor, disassemble the mating parts, clean both faces of old gasket residue and deposits, then fit the new gasket ensuring precise alignment of holes and ports. Reassemble with care and apply correct torque to fasteners to prevent body distortion that could impair sealing.

A new gasket helps stabilise airflow and fuel routes, which makes tuning adjustments more consistent. After refit, check for any fuel smell, visible seepage, or unstable idle, as these indicate misalignment, gasket damage, or other carburettor faults requiring further inspection.