O.S. Engine OS28614000 Cylinder Gasket GT60 for RC model engines  [OS28614000]

Cylinder Gasket GT60 Overview

This O.S. Engine cylinder gasket is an RC-scale replacement part intended specifically for the GT60 model engine family. It functions as the sealing interface between the cylinder head and crankcase to preserve compression and prevent leak paths that can affect idle stability and tuning response.

Compatibility is defined by the GT60 designation; confirm your engine model before purchasing. The gasket's primary role in tuning is passive but important: a consistent seal keeps combustion pressure predictable so needle settings and carburetor trims remain repeatable across runs.

Installation notes — keep the mating surfaces clean and free of old gasket residue, position the gasket flat on the cylinder base, and tighten the head screws evenly in a cross pattern to avoid distortion. Do not overtighten, and check for flat seating before final torqueing. After initial runs, re-check for signs of seepage or compression loss as part of routine tuning verification.

Handling and service tips — replace the gasket whenever the cylinder is removed for overhaul or if any fuel or compression leakage is detected. Store spare gaskets flat to prevent folding or creasing that could compromise the seal.