Ok heres the update.
The cutting deck drive belt arrived today, looks a tad thin and I haven't fitted it as yet but @ $35 I cant complain.
As Ive been roped into help a mate im fitting the belt tomorrow and will do an hours work on the old girl before pulling her apart again next week for a tidy and respray.
Im a much happier bloke now I have some doco and this old girl is nice and simple so it shouldn't take long to do unless my MIG is crook AGAIN.
Pics as I take em.