Don't know why they are not in the DIY's other than if you are simply installing an exhaust it is probably not necessary, plus it is probably not needed at high elevation.
Here is a diagram (not very good but it might help you locate the pilot jets) Part number 92064
From my experience, the pilot jets are a PITA to take out without pulling the carbs. It can be done, but you need a thin short flat head screwdriver.
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Addicted to anything that has an engine and rolls.
