Smeg GKCO755 - Manual (Page 14)

Instructions for the installer
34
6.3 Arrangement of burners on hob
Burners
1.
Auxiliary
2. Semirapid
3. Rapid
4. Rapid large
5. Ultra rapid
6. Double crown
7. Fish pan
8. Ultra rapid
9. Double crown
6.4 Lubrication of gas taps
After a while, the gas tap may become hard to turn or lock. If this
happens, it has to be cleaned inside and re-greased.
This must be done by a qualified technician.