If you have ever tried to hold the float so it hovers over the float needle and read a scale at the same time, you know it's a bit of a challenge.
I had a lucid moment today and came up with a very simple tool that makes it a lot easier.
All you need is a paperclip or piece of wire. Bend it in a U shape and then put a couple of bends on the end to grab the float arm and you are good to go. Here are some pics to make it clear.
This shows how you bend the two ends so that they engage and hold onto the float arm.
Here is the tool over the float arm. Note that it is wider than the opening in the center of the arm. This is to provide a little spring force to help keep it in place. Note also that each end kicks out a bit. When you squeeze the ends together to insert them into the arm, they become parallel.
Here is the tool in place, ready to help hold the float in exactly the right position as you read the scale. The tool lets you steady your hand on the carb body or bench so you can keep the float height exactly where you want it. I actually used that piece of fuel line coming out of the banjo fitting as a steady. Just push up or down to move the float down or up. With this tool you are also less apt to rock the float on the free play in the pin making the reading less than accurate. The tools keeps both float halves level as you lift them.
regards,
Rob