What does needle clip position do?
The top needle clip position is the leanest position available. This is because the needle is sitting farther down the inside of the atomizer or emulsion tube, restricting the fuel flow for a longer period of throttle slide travel. The bottom needle clip position is the richest position available.
What does raising the needle jet do?
Raising the needle by lowering the chip position at the top of the needle will richen the mixture. Lowering the needle will lean the mixture. WIDE OPEN THROTTLE: Changing the MAIN JET affects this range. Select the size which offers the best wide open throttle.
Will Keihin’s FCR carburetors fit on my bike?
Keihin’s FCR carburetors come fitted on a wide variety of dirt and dual-sport bikes, not just those from KTM. Various engines may respond differently to the modifications that follow, so it’s best to check with your own local expert regarding your particular machine. Nevertheless, I think the principles below have broad applicability.
What should I know before installing Keihin products?
Read the owners manual for your vehicle before installing any Keihin product to prevent any damage to the vehicle due to improper installation. Gasoline is extremely flammable and can be explosive under certain conditions. Installations should be done in a well-ventilated area.
Where is the air screw on a Keihin carburetor?
Keihin Carburetor Jetting. The air screw is a small (5mm in diameter) slotted brass adjustment screw located on the inlet side (air filter side) of the carburetor. The airscrew is a fine-tuning adjustment designed to allow the carburetor to be slightly adjusted for variances in atmospheric conditions.
What kind of gas should I use with my Keihin carburetor?
Keihin carburetors are designed to be used with normal pump gasoline. Fuels that contain over 10% alcohol content may damage parts in the carburetors. This may prevent the carburetor from functioning properly.