Does main jet affect pilot jet?

The main jet is only responsible for the last ¼ of the jetting. The main jet does not effect the jetting for starting and idling. It plays no part on low RPM or mid RPM jetting either.

What does a pilot jet do on a Mikuni carb?

The pilot jet is the part which supplies most of the fuel at low throttle openings. It has a small hole in it which restricts fuel flow though it. Both the pilot air screw and pilot jet affects carburetion from idle to around 1/4 throttle.

What is the difference between main jet and pilot jet?

Pilot Jet – this controls the amount of fuel when idling. Main Jet – this controls the fuel when you open up the throttle (between 50 and 100 percent power) Jet Needle – this controls the fuel when you open and close the throttle (between 20 and 80 percent power)

Are all Mikuni jets the same?

the mikuni jets are different but can be purchased from several on-line dealers. Some main jets are different lengths, and are known to rev to the moon as they don’t work with different float heights…….

Do primary jet affect idle?

3) The idle jets, especially the primary don’t affect anything except how the motor idles. Once the throttle position is off idle, the main jets do all the work. From this point, it is then adjusted for smoothest idle by turning it in or out. (Note: The motor will stall if turned too far either way).

What does the main jet do?

The main jet provides the fuel at 80 percent to wide-open throttle. The fuel flows up and out through the needle jet into the throat of the carburetor. When changes in air density are significant the main jet will need to be swapped. Handling the mixture between the pilot and main is the needle jet and needle.

Does main jet affect idle?

main jet has no effect on idle. you can remove the main jet completely and it will still idle just like it did.

Are Keihin Jets the same as Mikuni?

The Keihin 6mm round series is the same as the small Mikuni ones fitted to the S model. The diameter of the Keihin thread is the same but the pitch of the thread is *fractionally* different – it is not a problem.

Does pilot jet control idle?

Pilot jet controls just off idle to about mid throttle. Too rich a jet and you will load up the engine with fuel at low rpm.

Is primary or secondary jet bigger?

To answer your question, secondaries come in when you need more power, when the engine is likely at higher RPM and so the engine calls for more gas. Hence bigger jets.

Is the Mikuni vm24-502 a genuine carburetor?

I am fairly certain the VM24-502 is a carburetor MIkuni produced for OE manufacturers like Yamaha, Kawasaki and CanAm/Rotax. These carbs were modified for the specific needs of each vehicle they were placed on. Parts for these carbs were only sold by OEM-certified dealerships.

How does idle speed adjustment work on Mikuni?

The shorter, fatter notch on the opposite side is where the idle adjustment screw makes contact. As the screw is rotated inward, it pushes on the slide lifting it and raising the idle speed. This chart shows slides available from Mikuni Changing the needle jet would effect the lower to middle portion of the mid-range

What kind of work does Mikuni do on motorcycles?

Mikuni engineers work with motorcycle manufacturers to adapt their carbs to a particular design to meet factory specifications. For instance, certain models may need an idle screw on the left side rather than the right to make it more accessible – or maybe the choke lever needs to be operated from the right rather than the left.

What kind of carbs does a Suzuki Mikuni use?

Suzuki has a VM34SS on their PE175 which is very similar to the aftermarket VM34-168 and VM34-275. But there are subtle differences between these carbs. The genuine Mikuni public release (a.k.a. aftermarket carbs) are designed to fit a wide variety of applications.