Izzo Alex MKII & Duetto Case Removal
How to remove the outer case of these machines
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There are 4 screws under the cup tray, and with them removed you can access the two bolts at the top/front of the frame. You simply undo these with a 10mm (I think) spanner. The case then lifts off. When replacing the top bolts only need to be just tight enough to bring the top of the case together with the frame so there is no gap (do NOT over-tighten).
The MK II Alex has a 4th screw under the cup tray of course. In practise with the substantial (read 'heavy') outer case I find the trickiest and most important part when re-assembling is to look down from the top to make sure that both side 'tabs' and both back tabs engage properly. I find it helps to be able to see them. The natural springing of sides of the outer case means you have to squeeze the sides together enough to engage them both. I suspect this varies from machine to machine.
Oh, and on re-assembly the pipes very close to the captive nuts are hot of course. There is enough room to work but you can discover the heat when first putting a case back on. Dropping one of the screws inside the case doesn't help, once you do this you don't do it again.
Your right Paul I was working from the photo and forgot about the 4th screw….now corrected.