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O.S. - OSMG2474 OSM21538010 21538010 531028138513 4531028138513
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O.S. Carburetor #11H(B) Slide 12TZ(P)-T5
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O.S. Carburetor #11H(B) Slide 12TZ(P)-T5
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Tech Notes
This is the complete 11H(B) Slide Carb used on the following engines:


Genuine O.S. replacement parts


One complete 11H(B) carb w/pre-installed Thermo Insulator OSMG6247
and 5.5mm Black Carb Reducer OSMG2476
One rubber carb gasket OSMG6220


Installing on engine


Length: 22mm approx. including needle and idle stop screw
Width: 44mm approx. including needle and throttle arm
Height: 43.6mm approx. including needle
Diameter: 16.1mm OD of intake (throat)
12.9mm ID of intake (top) not including Carb Reducer
12.96mm OD of neck including thermo insulator
(the part that inserts into the crankcase)
6.64mm ID of neck @ narrowest point (top)
8.88mm ID of neck @ widest point (bottom)


Carb can be identified by its black color and the "11H" marking
on the back side of carb body
This carb is identical to the 11H carb with the exception of color
as the "B" stands for Black

Needle Settings:
Needle Valve (aka High Speed Needle):1 open from closed position
per page 18 of engine manual.

Mixture Control Screw (aka Low Speed Needle):The head of the mixture
control screw is flush with the carb body per page 25 of eng manual

Metering Needle: Head of metering needle screw is flush with the
ball link body per page 25 of engine manual.

Throttle Stop Screw: This is set so the rotor is still 0.5mm open
when closed per page 18 of engine manual.
tjt 052605

– 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 #11H(B) Slide 12TZ(P)-T5
This item is a replacement part for the following:
 LXJFY9 O.S. 12TZ(P)-T5 ABC Engine w/11H(B) Slide Carburetor  (Parts List)

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