Are all Keihin Jets the same?

No they aren’t all the same they have a few different ones. My ktm dealer had all different kinds for keihin carbs. I’d say they should have what you need.

What is FCR carb?

Keihin FCR Carburetors are acknowledged as the leading carburetors in 4-stroke motorcycle racing thanks to their precise metering high flow, flat slide throttle design and adjustable accelerator pump. The Carb comes ready to bolt onto the bike’s stock airbox and intake manifold.

How are carburetor jets numbered?

For example, a jet may be stamped (on its head) with the number 30. This indicates that the jet’s size is 30 mm. Installing a smaller size jet will reduce fuel flow, which is ideal for high-altitude conditions where air is limited, where a larger jet size increases fuel flow for oxygen-rich, low altitudes.

How do I know my main jet size?

Consult your manual first to find the stock size. Also pay attention to the numbers on the side of your old jets, which you’ll be able to see in the steps to come. A larger jet number means a bigger hole and more fuel. A smaller jet number has smaller holes and should be used if your engine needs to run more lean.

How do you identify Keihin Jets?

Look on the jets for a number (which is the size of the jet) and the manufacturer ID stamp. them which is a “square within a square” on them: GENUINE KEIHIN jets will have a “K star” stamping on them: Below are different types of jets, look for one that is similar and check measurements to verify it is your jet.

How do you adjust a Keihin FCR fuel screw?

To adjust the Fuel Mixture Screw and Pilot Jet: Set the Fuel Mixture Screw to 1½ turns out, start the motorcycle and get the engine up to operating temperature. Slowly turn the screw in until the engine starts to slow down and then unscrew the Fuel Mixture Screw 1/2 of a turn.

How do I know if my main jet is too rich?

If the pilot circuit is rich, the engine will have a rough idle or may not return to idle without “blipping” the throttle. You may also notice a distinct smell of raw fuel and some eye irritation from the exhaust.

How many jets are in a Keihin FCR carburetor kit?

This Kit Consists of: 6 Main Jets 3 Up – 3 Down & 4 Pilot Jets 2 Up – 2 Down Each Jet Kit is for One Carburetor For Duals or Racks order multiple Jet Kits For Parts and Availability Please Contact Us At [email protected] View Your Cart Button

What are the features of a FCR carburetor?

The FCR carburetors are the result of that request. Along with the highest level of technology available, the FCRs have proven their advantage with race wins around the world. Features of the FCR Carburetor: Smooth bore for maximum air flow.

Do you need air cleaner for Keihin carburetors?

Without this revolutionary floating valve design, a roller-type throttle slide cannot maintain a positive seal with the carburetor body, which must be maintained to provide accurate fuel metering. Keihin recommends the use of air cleaners along with these adaptors for the FCR carburetors.