Whilst this is a photo copy, and some of the pages are a little askew, it was all readable and intact. A real bonus finding an old manual for a classic piece of kit that no other site had.
It was easy done, and I got exactly what I was looking for.
Text excerpt from page 24 (click to view)
Hob burners To adjust the minimum level: â¢ Light the burner â¢ Turn the knob to the position of the minimum flame; â¢ Remove the knob; â¢ Unscrew or screw the by-pass screw (on the left above of tap shaft) until a regular small flame is reached. â¢ For LPG, adjust the by-pass screw for minimum flame setting. Reassemble the parts following the same procedure in reverse. Check that, when turning the knob quickly from the maximum position to the minimum one, the flame does not go out. Replace the nozzles of the oven burners Oven burner To replace the gas oven nozzle, follow this procedure: â¢ Check the table no.1 for diameter of nozzle; â¢ Remove the oven removable base panel; â¢ Remove the screw on the oven burner rod at the rear of the oven; â¢ Remove the oven burner by pushing it backwards. â¢ Replace the nozzle by means of a No 10 socket spanner; Reassemble the parts following the same procedure in reverse. Grill burner To replace the gas grill nozzle, follow this procedure: â¢ Remove the grill burner after removing the fixing screw. â¢ Replace the nozzle by means of a No 10 socket spanner; â¢ Refit all parts and test. Table no.2 Gas type
G20 G30 G31