What controls the temperature of the flame?
a) Air intake
b) Fuel supply
c) Ignition source
d) Flame shape

How do you achieve a blue almost invisible flame?
a) Close the air intake completely
b) Gradually open the air intake by rotating the barrel counter clockwise
c) Increase the fuel supply
d) Do not adjust the air intake

What should you do if there is a gap between the top of the barrel and the beginning of the flame?
a) Increase the air supply
b) Decrease the air supply
c) Increase the fuel supply
d) Do not make any adjustments