Samsung NX58H9500W Serie Manuel D'installation page 37

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 stem while the flame is lit.
2. Carefully push the screw driver into the C channel of
the valve, until it hits 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.
English - 37
Simmer Set
Screw
Small Screwdriver
Valve Stem