The standard answer is that you have hydraulic lifters and there is no need to adjust clearance.
EXCEPT, when you have cut the valves and seats. This causes the valve stem to protrude farther out the top side (unless the valves are also shortened). There is a MB special tool that measures the installed preload of the hydraulic lifter. The concept is that the hydraulic element has a range of preload where is can function properly. Too compressed and you might not close the valves at all times. Too little compression could cause noise.
Bosch Master, ASE Master, L1
33 years MB technician