I'm fixing up a 79 GT80.  I don't think that the  pump is working though.  It does not have a  on the side of it to manually turn.  I can hold the throttle open on it, and kick the bike over and the plunger is not moving.  I'm assuming I should be able to see the plunger moving in and out when kicking it over, right?  I can push and pull the plunger in and out by hand.  Thoughts? 

You'll wear out the kick starter checking it that way.  Probably would take at least 50 kicks to get the pump to go through one stroke.  Output is measured in cc's per 200 pump strokes so it would take like 10,000 kicks to test the output that way.

Running the engine on premix while checking the pump output is the recommended procedure.

Gotcha. I wasn't sure what the ratio was on that. I'll check it that way