I found out the problem, after reading the manual on the US site it all became clear. http://www.mamiya.com/assets/pdfs/rangefinder/Univeral_and_Accessories.pdf

By Alan on Friday, June 07, 2002 - 09:48 am:

Jonathan,
I suspect it is faulty. Please phone our service department on 01782753346/753345 to discuss in more detail and see if we are still able to repair them.

By Jonathan on Wednesday, June 05, 2002 - 06:08 pm:

I have a mamiya universal with the 6x9 back mk3, I can't seem to load a film correctly. this is the first film I have tried to load. Under the leaver it has an arrow, and the dial on the right is set to 120, the S on the dial is lined up with the S on the frame counter. I can load the film but the counter is not active and I can't release the sutter from the button on the back.