Synchronize carbs on 2001 ninja 250?

Question

Synchronize carbs on 2001 ninja 250?

Answer 1

Go for a 30 minute or so ride to make sure your engine is nice and warmed up. Carb sync is usually done after a valve adjustment, but you don't have to do them together.

Remove your fuel tank. On the top side of each intake - in front of the carbs - is a vacuum nozzle.

Remove the black hose from each (plug the hoses for the duration of the job) and place one end of the tubing on each fitting.

The next bit is the actual adjustment. It is more or less the same, regardless of which of the tools (described in just a bit) you build.

Start up your engine for a moment. If your carbs are in sync you will have equilibrium: either the water in the two-bottle method will be at the same level, or the oil in the oil-in-tube method will not flow one way more than the other. If there's more vacuum from one carb or the other, the oil or water will flow that direction.

Turn the linkage adjustment s***w (you'll need either a very long screwdriver or a stubby one) in between your carbs so the vacuum is equal, and you are all set. It only takes a slight amount of turning to affect the adjustment. Don't open the throttle (butterflies). This introduces other factors that affect vacuum. Assuming your vacuum is even between the carburetors at idle, you have adjusted it correctly.

Directions for adjustment: Turn one way, see the result. Turn the other way, see what changes. Adjust as necessary. When they're even, you're done.

Answer 2

Well first you need a synchronizer and then the knowledge to do it.

Answer 3

In between the 2 carbs is the synchronizing s***w.

Turn the throttle and look at the linkage connecting the 2 carbs together.

The s***w will move with the linkage.

While the engine is running, place your hands at the end of both mufflers to feel the exhaust pressure.

Synchronize the carbs (by turning the adjustment s***w) to get the exhaust pressure equal.

It will be easier if you remove the fuel tank and hook up a fuel supply to the carbs, so you can get at the s***w.