.
I tipped the mower on its side, as you suggested Norm, to get a better look.
I saw that the pulley adjustment at the front was as far back as it could go, so no adjustment available there.
There's two long braces either side of the machine that control the lift of the cutter assembly. (Don't know what they are called.)
I saw that the back end of the top pair could slide in slots in the main chassis, pushing the whole cutter assembly forward, just enough to give me enough free-play in the belt to get it into position.
I got the belt on, then re-tensioned it sliding those bolts/braces back, holding each under tension with a bar as I tightened the bolts.
Bugger of a job, but it worked a treat!
Now I just need to sort the wiring out and I reckon I'll be in business.
I've had to buy a new (aftermarket) battery cutoff switch and solenoid because the original ones were RS. Sorting out their mounting/connection is the next step.
It's been a LOT of work (it was in far worse condition overall than I originally thought), but jeez I've enjoyed it all.
Just hope the bloody thing works in the end!
