Hi,

Just want to check the float height on my 04 290.

I've done a search and found that the measurement should be 18.5, but how and where do you take the measurement, and how do you adjust it?

Cheers,

With the carby upside down, measure to where the float rides on the arm. Adjust with the tabby on the needle! I think!

Went on the Dell'Orto website and all it states for the PHBL series is...'for floats with independent parts hold the carb upside down and check that the float arm is parrallel to the carb face'. To adjust 'carefully bend the float arms to the required position'.

Then in the table at the side it states a float height of 24 +/- 0.5 mm. - Is this with the floats attached measured from the bottom of the float to the carb body?

Don't over think this. Just stick with the first paragraph and make sure they are parallel. It will make sense when you take the float bowl off and set the carb upside down on the work bench.

Hi,

Thanks for the reply.

With the carb upside down and the float bowl and floats removed the float arm was not parallel, but raised slightly. I removed it and slightly adjusted the arm's so they were now parallel. Then measuring up from the throttle body to the float arm (both sides) the measurement was 18.5mm - Is this the magic figure I found when doing a search on this site, or just a coincidence?

Cheers,

I think you got it!

Long time after you've asked but here's a link may help others.

http://www.ducatimeccanica.com/dellorto_gu...llorto_3_2.html

Went on the Dell'Orto website and all it states for the PHBL series is...'for floats with independent parts hold the carb upside down and check that the float arm is parrallel to the carb face'. To adjust 'carefully bend the float arms to the required position'.

Then in the table at the side it states a float height of 24 +/- 0.5 mm. - Is this with the floats attached measured from the bottom of the float to the carb body?

SURE ITS 18.5mm