2000XLT

which goes first in line to the carb, the primer i would assume?

JayC1968

My Feedback: (3)

That's the way I would do it, but it really does not matter.

bam.bam

Is this a primer/fuel filter all-in-one unit?

If so, I think it does matter which side the primer side goes because there is a one way valve associated with these units.
The primer pump should be connected to the tank output line and the filter side to the card input.