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