O.S. Engines 2BK Carburetor Operating Instructions

The O.S. Type 2BK carburettor has been designed for CZ Series 'off-road' racing car engines. It has a larger throat and incorporates an automatic mixture control device, allowing the engine to reach its full potential and providing positive throttle response and rapid acceleration.


O.S. Engines 2BK Carburetor Operating Instructions - cover page
Brand
O.S. Engines
Category
Other
Document type
User Manual
Language
English
Pages
2
File format
PDF
File size
1 MB
Published
08 August, 2012
Updated
28 September, 2023
MD5 checksum
128C1F8533BF205A4C1CEEEA040AC7EF

About this manual

The O.S. Type 2BK carburetor is designed for CZ Series 'off-road' racing car engines. It features a larger throat and an automatic mixture control device to provide positive throttle response and rapid acceleration. The manual emphasizes the necessity of using a muffler pressurized fuel feed system and ensuring the fuel tank cap is tightly closed.

What's inside

  • Needle-Valve Adjustment
  • Mixture Control Screw
  • Throttle Stop Screw
  • Carburetor Cleanliness
  • Subsequent Readjustments
  • Parts List

Specifications

Product TypeCarburetor
Compatible Engine SeriesCZ Series
Key FeaturesLarger throat and automatic mixture control device

Frequently asked questions

What is the function of the Needle-Valve?

It adjusts the mixture strength when the throttle is fully open.

How should the Needle-Valve be turned to close it?

Turn the needle-valve clockwise to close it for a leaner mixture.

What is the purpose of the Throttle Stop Screw?

It is used for setting the position where the carburetor rotor is closed.

What fuel system is required for this carburetor?

A muffler pressurized fuel feed system must be used.

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