bosch wfk2200GB won't spin?

Hope someone can help as I don't have a manual. The machine fills but the drum doesn't turn, it makes clicking noises then won't progress to spin - it has flashed up a 4 by the time delay/h selector even though I didn't press time delay. The machine empties and I can open the door but everything is soaking wet.
If I need to open it up (to look at the brushes for example) which part do I open to find the motor - top. back? Sorry to sound so daft but i've no idea.
It is an old bosch w/machine WFK2200 is all it says on front it has eight buttons. The number inside door has been partly wiped off - I could make out WFK 2200GB/ but not what comes after the slash.
Has this happened to anyone else?