We may have found other answers which could help you.
Click here for Out Grill Rangemasterwhere can i get a hotplate for my rangemaster 55?
Bottom oven won't stay on unless you keep holding on to button ?
Rangemaster 110?
Re setting clock on Rangemaster 110 gas cooker?
Restarting after power cut?
How to keep a rangemaster 110 gas top from not letting me do?