Carb Question

I have looked through the forum and could not find the answer.

I have a 2002 YZ426.

I would like to know the correct term for each jet.

There are two jets on the air box side. I believe those are called (Starter Jets). one is a 100 and the other is a 200.

What do these jets do? Are they called (Starter Jets)?

There are three jets in the float area.

A main jet. Got that.

The jet with the holes crossed drilled, is this the (Pliot Jet or call the Slow Jet)?

Then the is a third jet down there. Just a reguler jet. What is this jet called and what does it do?

What does FCR mean?

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