Many thanks for your quick reply. Sourcing the part is harder than expected. and I take you advice re avoiding hassle... a new machine.
The part you need is number 400801, (complete balde carrier assembly). Tool is actually made by a Dutch company called Ferm and rebranded and sold under severl different names, so you may need to contact them to find this part if it is available. What I will advise though, is that the cost and hassle of getting this part would be not economical compared to the tool's value. I have done a brief search online for you and have found a second hand version of your saw for sale for less than £30 including delivery which would probably be easier than going down the repair route:
See following link: