O.S. Engines FS-91SII Needle Assembly 86 8H OSM27681900

O.S. Engines FS-91SII Needle Assembly 86 8H OSM27681900The O. S. Engines OSM27681900 FS 91SII Needle Assembly is a replacement carburettor needle assembly designed for the O. S. FS 91SII model aircraft engine, ideal for restoring fuel mixture adjustment during engine servicing or repair. Features Genuine O. S. Engine Spare: Replacement needle assembly for compatible O. S. model aircraft engines FS 91SII Fitment: Intended for the O. S. FS 91SII four stroke glow engine Carburettor Service Part: Helps

The O.S. Engines OSM27681900 FS-91SII Needle Assembly is a replacement carburettor needle assembly designed for the O.S. FS-91SII model aircraft engine, ideal for restoring fuel mixture adjustment during engine servicing or repair.

Features

• Genuine O.S. Engine Spare: Replacement needle assembly for compatible O.S. model aircraft engines
• FS-91SII Fitment: Intended for the O.S. FS-91SII four-stroke glow engine
• Carburettor Service Part: Helps restore fuel mixture adjustment when the original needle assembly is worn, damaged, or missing
• Needle Assembly Reference: Listed as #86 / #8H for applicable O.S. carburettor setups
• Useful Engine Repair Part: Suitable for maintenance, rebuilds, and tuning repairs on compatible O.S. engines

Specifications

• Brand: O.S. Engines
• Part Number: OSM27681900
• Product Type: Needle assembly
• Part Reference: #86 / #8H
• Vehicle Type: RC aircraft
• Application: Glow / nitro model aircraft engine carburettor
• Primary Compatibility: O.S. FS-91SII
• Intended Use: Carburettor fuel mixture adjustment repair and replacement

Includes

• 1 x O.S. Engines FS-91SII needle assembly

FAQ

What engine does the O.S. OSM27681900 needle assembly fit? The O.S. OSM27681900 needle assembly is intended for the O.S. FS-91SII model aircraft engine.

What does this part replace? This part replaces the carburettor needle assembly used for fuel mixture adjustment on compatible O.S. engine carburettors.

Is this a complete carburettor? No. This listing is for one needle assembly only. The full carburettor, carburettor body, rotor, throttle lever, gaskets, fuel line, and engine are not included.

When should a needle assembly be replaced? Replace it if the needle is bent, damaged, seized, worn, leaking, missing, or no longer allows reliable mixture adjustment.

Important Notes

• Confirm your exact O.S. engine model and carburettor parts diagram before ordering, as similar O.S. needle assemblies can differ in fitment.
• This listing is for one needle assembly only. Other carburettor and engine components are not included unless supplied in the original manufacturer pack.
• After installation, reset and tune the engine mixture carefully before running at full power.
• Check for fuel leaks, smooth needle adjustment, secure fitment, and correct fuel line condition before operating the engine.