Do I need to pull by range aster out of its housing for repair?

I've just had the repair man out (sent by range master) to look at my range m
aster 110. It has a problem with the oven not getting any hotter than about gas mark 2. He has diagnosed the problem as being the thermostat and has said it needs replacing. He's told us that the range master will need to be pulled out of its alcove so that he can replace the part. Does anyone know if this is necessary as its going to be very difficult to get it out into the middle of my kitchen