We may have found other answers which could help you.
Click here for Leisure Rangemaster 55
Restarting after power cut?
Re setting clock on Rangemaster 110 gas cooker?
where can i get a hotplate for my rangemaster 55?
Rangemaster 110?
Bottom oven won't stay on unless you keep holding on to button ?
Gas oven does reach working setting?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix gas cookers.