Smeg SR 86 AGH Manual page 22

9.7 Arrangement of the burners on the cooking hob
9.8 Lubrication of gas taps
Over time the gas taps may become difficult to turn and get blocked. Clean them
internally and replace the lubrication grease.
This procedure must be carried out by a specialised technician.
46
Instructions for the installer
BURNERS
1 Auxiliary
2 Semi-rapid
3 Rapid
4 Ultra-rapid
5 Double crown
6 Fish burner