Whirlpool  SC8720EDB Use And Care Manual page 17

Burner flame
wWARNING
Carbon Monoxide Poisoning Hazard
Do not operate with a yellow flame.
Doing so can result in death, heart
attack, or convulsions.
NOTE: Occasionally check the burner
flames for proper size and shape as shown.
A good flame is blue in color. If flames lift off
ports, are yellow, or are noisy when turned
off, you may need to clean the burners (see
page 16), or call a qualified technician for
adjustment.
SURF ACE BU RN ERS
Flame shape
and size
Setting
17