Other Mikuni sizing

[JETSKIHORDER18]

I have a mikuni carb that came in a box of parts and i don't know what size it is. The bore measures 1 7/8" on the top. 42 44 46 ??????

Thanks jordan

 

[Tyler Zane]

47.625mm=1.875in (1 7/8)

 

[Matt_E]

They are not measured at the top.
Measure the throttle plate diameter.
There should also be a part number stamped on th carb in the form MAC XX where XX is a two digit number. You can look up that number in the Mikuni SBN manual.