Thanks Gadge

To clarify, given the photos can you comment on whether I have the EN71131A/D Oil Seal Guard Washer and therfore I'm missing the Oil Seal Guard Cup EN71130A or , as I assume, have the modified lower crankcase EN71312A and EN71408A Oil Seal Proctector?

I did understand its purpose hence my interest in how it should be attached. Can you comment further on how this Oil Seal Proctector (washer) could be held in place? I don't know of a source for a "new" part.

I note your comment "with both axial and [tight] radial clearance around the Seal Protector", but can you clarify this for me in this case. Is this "washer" or the "recess" worn to the extent that it needs replacement or a spot of Araldite on the edge to hold it in place within the housing "recess" while still allowing the shaft to freely rotate, but with a tight fit?

At present it seems to be neither tight enough in the crankcase housing "recess" nor on the shaft and I would imagine work its way down to the top of the tapered sleeve leaving access to the shaft and seal?

Mowerfreak, it was very fiddly job to remove all the rubbish from around the shaft, oil/dirt/string etc make a good "glue", did resort to the hacksaw at one stage, too much of a challenge for the Stanley knife.

thanks again

Mark