It's in a tight position and weighs a ton, struggled to get it out, back cover off, the drive belt is off and part shredded, the shreds are tied firmly in a knot around the motor shaft.

A call round all the local plumbing suppliers gets me the information the Servis went out of business long ago and the only way to find a belt is to search online...........somebody will have one.
So I've tidied up the belt cleared all the shreds and put it back together with just five out of the original seven V's left and it worked, getting it back into situ was even harder than getting it out and I was knackered

So now do I look for a belt or bite the bullet and buy a new machine?