Tomguy gave you the specs for the valves. The procedure is like any other pre-1980's MB engine - turn the engine to put the heel of the cam lobe against the rocker and turn the adjuster with a 17mm crowfoot. If you get a really stubborn one, you may have to remove the rocker and put a socket on the adjuster.

Sounds like a great car.

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe