Samsung NX58H5650W Serie Manuel D'installation page 38

To adjust flame low setting
Identify which burner is exhibiting too high or too low of simmer rate via manifold
panel graphics.
1. Rotate a knob to "LO" position and remove the knob
from the valve shaft while the flame is lit.
2. Carefully push the screw driver into the C chanel of
the valve, until it his the simmer set screw. Make sure
the screwdriver flathead is seated into the set screw
groove.
3. Rotate valve set screw clockwise to decrease "LO" setting flame output, or
rotate set screw counter clockwise to increase "LO" setting flame output.
38_ installation instructions
Simmer Set
Screw