This head gasket set is an RC-scale replacement intended for FS-200S and FS-200S-FI model engines, supplied as 2 pcs per pack. It serves as the sealing interface between cylinder head and crankcase and is a routine service item when the head is removed for maintenance or tuning.
Functionally, the gasket ensures compression integrity and helps maintain consistent head height, both of which affect idle quality and peak performance in nitro RC engines. When reassembling after head removal, install a fresh gasket to avoid leaks that can alter mixture and tuning behaviour.
Installation notes: clean mating surfaces thoroughly, remove old gasket residue, align the gasket carefully before lowering the head, and follow the engine manufacturer's head-bolt tightening sequence and torque specifications. Avoid overtightening, and recheck for leaks after initial run-in.
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