Smeg A41A - Manual (Page 26)

Instructions for the user
60
This type of cooking is only for the main oven. Use it for small size
pieces.
Prepare the food on the spit rod and block fork screws A. Insert the
frame B in the third level from the bottom. Remove handle D and
position the spit rod so the pulley E remains guided on frame B.
Completely fit frame B until the tip of the spit rod fits into hole C on the
back wall of the oven. Place an oven dish F on the bottom guide and
pour in a little water to prevent smoke from forming.
It is normal for the thermostat light to going on and off during cooking.
This indicates the temperature inside the oven is regular.