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C- unscrew the screws of the left and right burner
D- remove the left burner and the right one
E- After removing the burners, burner nozzles unscrew the two left and two right of burner nozzles
F- Throw away the old nozzles and gaskets
G- Mount the new nozzles in the place of the old ones .
H- mount again the burners and fix them with their own screws.
I- mount the burner lower panel and fix it with its own screws.
L- open the gas tap.