Genuine question - are'nt the 2 washers ( 7 & 8 ) going to need to be reattached ?
I'd hazard a guess that as per Mike's suggestion, this is bolt 6 and therefore washer 9 is the washer in question. Looks like it sits outside of the cylinder as it can be seen in the photo above.
However seeing as you couldn't get the bash plate off due to lack of tools, I'd strongly suggest a visit to Steptoe to get this fixed. If you damage the plastic cam chain guide it gets messy and expensive. Ask me how I know.........

What a way to announce yourself. Welcome to the forum by the way