SKU: 54356825754

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

Sale price$21.55 Regular price$23.95
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Description

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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 54356825754

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Kindle Customer
Bozeman, US
★★★★★ 5
Great shelves
Size: 24 Inch, Color: White, Size: 24 Inch, Color: White
Pretty easy to put up. Love the way it looks.
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Reviewed in the United States on April 30, 2026
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Daisy l.
Battle Creek, US
★★★★★ 5
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Size: 16 Inch, Color: White, Size: 16 Inch, Color: White
I love these shelves! The look good and the installation was super easy! They also seem very durable!
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Reviewed in the United States on May 7, 2026
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Micah
Alexandria, US
★★★★★ 4
Cheaply made.
Size: 16 Inch, Color: White
Looks nice. Feels cheap and does not hold much weight
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Reviewed in the United States on April 14, 2026
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Sherry
Los Angeles, US
★★★★★ 5
Good shelves for the price can be challenging to install correctly
Size: 16 Inch, Color: White, Size: 16 Inch, Color: White
Good quality shelves for the price. Happy with the purchase. They give you assorted hardware to mount each shelf. Wall anchors for masonry or brick and anchors for drywall as well as screws to affix shelf to the wall bracket. The installation was fairly easy but it can be a bit difficult to get the bracket leveled on the wall. The “level” they give you is useless, it is only the tube - not in a housing, so 1 1/2” long. You will need a better level. Basically you place the bracket where you want the shelf to go then make sure it is level and take a pencil to mark the holes. We ended up using a heavier quality wall anchor so only needed 2 anchors instead of the four they send you. Once the bracket is on, slide the shelf onto the bars coming from the bracket and use the 2 set screws to secure it in place. Check for level and if it isn’t you can remove shelf and loosen bracket screws and wiggle the bracket while still attached while retightening screws. We had to re-level one of our shelves this way. Hope this helps and that it makes sense. As for weight capacity I wouldn’t want to put more than a couple of pounds on a shelf. As it is secure, it is hollow inside and too much weight would probably either cause the shelf to sag or damage your wall
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Reviewed in the United States on February 25, 2025
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Emy R.
Grantham, US
★★★★★ 5
Excellent product with height recommendation
Size: 24 Inch, Color: White, Size: 24 Inch, Color: White
My bathroom renovation is turning out great. These shelves are beautifully stable and show no visible assembly. The idea of ​​these floating shelves is brilliant.
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Reviewed in the United States on February 19, 2026

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