O.S. Engine OS27981710 60B Carburettor Retainer Replacement Part  [OS27981710]

Purpose of the Retainer

The O.S. Engine OS27981710 carburettor retainer 60B is intended for RC engine installations where a carburettor must be secured inside the engine assembly. It acts as a positioning and mounting component that keeps the carburettor aligned with the intake and throttle linkages while the engine is running or being adjusted.

Replace worn mountings or refit the retainer after engine teardown to restore correct alignment. To install, locate the retainer so the carburettor contacts the intake flange, line up the throttle linkage and attachment points, then tighten each fastener evenly to maintain alignment. Tighten firmly but avoid excessive torque to prevent thread or housing damage.

For setup and tuning tasks the retainer preserves consistent carburettor orientation so needle adjustments and throttle feel do not shift between sessions. As part of routine checks inspect for bending, cracks, or wear that could allow the carburettor to sit incorrectly.