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O.S. - OSMG2444 OSM23818080 23818080 531028144453 4531028144453
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O.S. Carburetor #21JS 7mm Insert Speed 21 V-Spec II
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O.S. Carburetor #21JS 7mm Insert Speed 21 V-Spec II
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Tech Notes
This is the 21JS Slide Valve Carb for the
O.S. Engines 21VZ-B V-Spec II World Edition


Slide Valve mechanism is housed inside of a rubber boot to protect
it from dirt
Ball end throttle arm connection reduces play in throttle linkage
Adjustable - Mixture, idle mixture, and throttle stop
Cast aluminum carb body


One 21JS Slide Valve Carb with 7mm Reducer
One O-Ring
One Washer


Ball Link To Operate Slide Valve With Servo


OD carb to engine mounting sleeve - 15mm (0.59")
OD carb to air cleaner mounting sleeve - 14.5mm (0.57") with
16mm (0.63") lip
Carb throat bore - 7mm (0.28")
Carburetor height - 54mm (2.13") including needle valve
Carburetor width: 54.5mm (2.15")

cnh 3/2/09

– If you need more information, use these O.S. resources –
Email: enginesupport@hobbico.com
Web Site: http://www.osengines.com/
Phone: 217-398-8970
  Postal Address:

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Parts Compatibility
Parts Compatibility for O.S. Carburetor #21JS 7mm Insert Speed 21 V-Spec II
This item is a replacement part for the following:
 LXCURK HB Racing HB 21XZ-B Hara Edition Nitro Engine  (Parts List)
 LXWDH4 O.S. 21VZ-B V-Spec II World Edition Off-Road  (Parts List)

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