The HW-10A was the model that was awarded the CIK-FIA KF3 tender from 2010-2012. This model was extremely popular and was used to win multiple National and International Championships.

  • Butterfly Opening
  • Avenger Class Venturi/Body Design
  • Avenger Class Inlet Needle and Seat Design
  • Avenger Class Idle/Acceleration Nozzle Design

Can also be used to upgrade an HL carburetor with similar size venturi and throttle bores, such as the HL-334A (but check your local rules to make sure the carburettor model number is not mandated).

Can also be used with 4-stroke engines if modified for pulse hole.

Carburetor Settings:

KF Engines vary  by manufacturer, manufacture date and tuning.  For optimum performance, you might need to try different settings.  Below is a listed of recommended settings, starting with most recent/most popular first.  For best results, start with the most recent and then adjust first the High then the Low needle each in 1 minute increments up to 3-5 minutes each (extreme conditions like hot or rainy weather may require a little more).  If you are not satisfied, repeat the procedure with the next setting.

L=1 Turn 30 minutes; H=32 minutes

L-1 Turn 30 minutes; H=30 minutes

Repair Kit and Diaphragm Gasket for the carburetor:

Main: RK 1 HW and DG 1 HW

Optional: RK 2 HW and DG 2 HW

Weight1 kg
Venturi Diameter


Throttle Bore Diameter


Throttle Bore Range

Product Line


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