Measuring float heights (dry)

[gallegoenlaluna]

Hello everybody,

I am involved in the disassembly and cleaning of the carburettors and I have reached the moment of having everything assembled but I want to check if the float heights is correct.

I have seen that the height is measured when the float just contacts the float-needle. The float needle should not be compressed. At this point I have doubts because the float is not such but they are two joined by a support so I thought to measure the height on the two sides of the carburetor and ... they are different

My bike is a '99 XJ600N Diversion (from Spain) and the carburettors are Mikuni BDS28, here they look as if you were mounted on the bike:


Here are the places where I take the measures on each carburetor:


Here the measurements I have obtained:

Code: Select all

CARBURETTOR       1        2        3        4
A                 10,4mm   10,7mm   11,2mm   11,4mm
B                 10,1mm   10,2mm   10,8mm   10,6mm

The Haynes manual says that for motorcycles from 98 onwards the measurements are between 8.8mm and 10.8mm:


What is the correct measurement if any of them is?
Are the floats defective?
Do I mount everything and forget about it?

Greetings to all.