Just for the sake of clarity, the model of this mower appears to be an Evolution 3 Mk2A 12.5-30 - see decal pics. It's a bit hard to tell because not all of the linkages are as described in the manual and the mechanism for the hand brake isn't a match for any of the manuals.

Attachments
bonnet decal.jpg (36.21 KB, 216 downloads)
Bonnet decal - 12.5 hp motor and 30 in cut
Rear decals.jpg (48.7 KB, 217 downloads)
Rear decal - FastCut doesn't feature in the model descriptions.