This O.S. Engine head gasket, model OS40614000, is produced as a direct-fit replacement for FS-62V nitro engines used in RC models. It creates the crucial seal at the combustion chamber and helps maintain engine compression when correctly installed.
The product designation limits compatibility to the FS-62V family. Confirm fit before attempting to use this gasket on any other engine series by checking official parts lists or contacting an authorized dealer.
Installation guidance: clean mating faces thoroughly, remove any remnants of the old gasket, confirm both head and crankcase faces are flat, and replace the gasket whenever the head is removed. Always follow the engine manual for the correct head nut tightening pattern and torque settings.
Tuning impact: a sound head gasket is essential for holding compression while you adjust fuel delivery or shim the head. Symptoms such as unstable idle or sudden power loss can be caused by a compromised gasket, so include gasket inspection in your diagnostics.
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