O.S. Engine OS4A066000 PUSHROD GF30 for FS engine parts  [OS4A066000]

Engine pushrod for FS engines

This pushrod is presented as a service replacement part for RC-scale FS engine valve trains. It is identified by the GF30 marking and is intended to serve within the FS engine parts category, providing the mechanical linkage between cam/rocker motion and the valve assemblies in nitro RC engines.

Fit and basic installation guidance: confirm the pushrod length and end-fit with the engine rocker and valve tip before final assembly, remove the cylinder head or rocker cover as required by your engine model, and check for straight travel and proper clearance throughout the stroke. Light lubrication on contact surfaces and a final clearance check at operating temperature help prevent binding.

Tuning and maintenance role: the pushrod affects valve timing consistency and should be inspected when adjusting valve lash or performing routine top-end work. Replace pushrods that show wear, bending, or scoring to maintain reliable valve actuation and repeatable tuning results.