Rangemaster 110 Oven not working?

I would like to bypass the electric clock which is faulty .I assume this is the reason the oven does not work. I have removed 4 screws from the left gas hob which allows it to be hinged up. I have also removed the 2 left hand screws from the righthand hobtop. I cannot see how to release the glass plate warming hob top which I assume conceals 2 more fixing screws. Does the glass lift out ? How can I lift the righthand hob top to gain access to clock assembly?
Can any one help please