Help me set up the carburetor dellorto phbl 26 bs 1994. Motorcycle Gas Gas 1994, 237cc engine. The old carburetor parameters that were originally when I bought the motorcycle.

 

35 Pilot Jet

108 Main Jet

D36 Needle

50 Slide

60 Choke Jet

350 Float Needle valve

 

At these settings the carburetor is probably leaking. He just doesn't eat. Then I bought a 200 valve from Float Needle and bought a Main Jet in all sizes. I started trying to change the settings, I just changed the Float Needle valve to 200 and Main Jet 122, but it didn’t do anything. It still pours. Could it be a problem with the floats? Their weight is 2.8 grams. Maybe the float chamber I have is 19 mm at the wrong level. What settings are needed for my 237cc engine. Maybe the float chamber level is wrong? Maybe you need more or less?

Edited October 15, 20241 yr by nick1

There is no one on the forum who understands the carburetor?🥺

14 hours ago, nick1 said:

There is no one on the forum who understands the carburetor?🥺

Your photo of the inverted carburetor shows that you have omitted to fit a gasket/copper washer under the float valve seat/body. This omission is a possible cause for the float bowl overflowing

6 hours ago, feetupfun said:

Your photo of the inverted carburetor shows that you have omitted to fit a gasket/copper washer under the float valve seat/body. This omission is a possible cause for the float bowl overflowing

here you mean?

is there anyone who can understand? They gave me an answer, but perhaps google translator did not translate it specifically

Did you check the fuel filter?  Part #53 in the parts diagram

http://ducatimeccanica.com/dellorto_diagrams/phbh_l_diagram.jpg

... part #61 is the seal others were questioning.

Edited October 22, 20241 yr by lemur

3 hours ago, lemur said:

Did you check the fuel filter?  Part #53 in the parts diagram

http://ducatimeccanica.com/dellorto_diagrams/phbh_l_diagram.jpg

... part #61 is the seal others were questioning.

yes it is in place and it is clean. And the gasket under number 61 is. And what copper should it be? The previous person wrote

Next test I would do is hook up fuel delivery to the carburetor and move the float lever part #70 up and down with my finger, observing how well the valve allows fuel to flow into the float bowl area and to stop the fuel flow correctly when you raise the lever.  Works just like a toilet, if you can fix a leaking toilet you can fix a carburetor.