I need the step by step procedure for adjusting the cam chain on my 1982 650 maxim

Pop the cover off, turn the rotor until the C mark is aligned, Then loosen up the 12 mm nut that is on the 10 mm headed screw. Then loosen up the 10 mm headed screw. When the screw is loosened up it will take up slack and put spring pressure on the rod that puts pressure on the cam chain. Now that its taken up the slack tighten down the 10 mm headed stud and then the 12 mm locknut. That should take out all play in the cam chain tensioner. The cam chain tensioner is located under the carb boots from the engine to the carbs.
Hope this helps!