BigT

GS 1000s don't have VINs, they have serial numbers Pogster, post up a picture or two for better identification

Zman, That is correct. Replace that part and keep on building Here's a tutorial for the VM carbs gsarchive.bwringer.com

Is this a new bike to you? Or, was it running fine before?

You should also check the holes in the carbs the fuel screws fit into. People often overtighten the fuel screws, enlarging the holes

Oil leak could be a number of things -oil pressure switch, cam chain tensioner, valve cover Degrease and spray with foot powder to find what's leaking. 42 year old gaskets are known to fail

The first thing is that the Mikuni and Dynojet numbers are not the same Second is the Dynojet kit should have adjustable needles

yes, a lot of parts went NLA in the past few years Just to clarify, is yours the single, or twin disc model? I can't keep up with the differences by country

I think he means hydrogen peroxide

You should be able to buy a new reservoir from Suzuki The originals tend to get brittle over time

Uh, no, just no

I don't think you need any any O rings with the Cometic gasket Lots of oii is generally the valve cover gasket

To answer your question, yes, a GS motor will run with zero valve clearance Then, it gets harder and harder to start and gets parked for a long time Since you are following the factory method, be sure and rotate the motor several time and recheck the clearance You can go to a 2.35 shim in that example, many people run .1 mm clearance The clearances diminish over time

If you don't know that your petcock has a fuel filter, well If you have a fuel filter in line, it can't be for a FI motor

I'd check to see if the unnecessary fuel filter is flowing fuel

all 650s are 673 cc