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.
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