Float Level on Keihin PWK 38

Apr 24, 2003
Getting the tang to touch the float needle just right, then holding everything in place while you measure the distance to the top of the float - - you need at least 3 hands and some luck to get it perfect.

How about attaching an automative vacuum gauge to the fuel inlet stub and squeezing the lever slightly? If it holds vacuum, your needle is working and you know exactly where the float is seating the needle. Everything is held in place by the vacuum so you can easily measure the distance.

The question to Dave (or anybody) is: what IS the measurement using this method? Something less than 16 mm?

THANKS. Jetting seems to begin with the right float level.