Some what a simple job if you have a "factory" wrench OR one that is shaped just right.
The clearance specs should be on the valve cover, if not then set the intakes to .004" cold & the exhaust to .010" cold.
MERCEDES Benz Master Guild Technician (6 TIMES)
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44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
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190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)