Engine adjustment question

[johndmc57@xxxx]

When I got this car it was a basket case, when the engine would not 
start I palyed with every thing to try to get it to start, (there was 
a hidden kill switch and a cut coil wire), I would like to know what 
are the basic settings I should use for the emmssions. There are 
three strange looking screws (part #102391, PLUG) on the throttle 
valve assy. I cannot find a clear answer on what these are and what 
the adjustments should be. Can I buy the tools I need to adjust the 
emissions on this car. (In my State Mass. this car is excempt from 
the emissions test because of it's year, 1983 and older.)
Thanks.