Smeg CIR574X - Manual (Page 13)

Instructions for the installer
15
6.2 Arrangement of burners on the hob
Burners
1 Auxiliary
2 Semi rapid
3 - 6 Rapid
4 Wok
5 Wok (dual control)
6.3 Lubrication of gas taps
With time it may happen that the gas taps get blocked and hard to turn.
Clean them inside and re-grease them. This operation must be done
by an authorised person.