Vax 6140 Pet Vax Multifunction Vacuum Cleaner ...

Question

Hi there, I was wondering how do I go about replacing the on/off swich as it needs to be held down to keep working. I've ordered a new switch, but before I start tampering with screwdrivers and gaffer tape ;) could you please help me in any way at all. Thank you for your time and all help would be greatly appreciated. The model is a vax 6140 pet vax sorry I posted it under a bagless upright.