Thanks so much guys..
I lied a bit in my initial post as the mower was on EBay For Sale yesterday. I didn't want anyone else to buy it before I went and looked at it. My apologies about that. It was listed for auction with a minimum bid of $450.00 and a buy it now price of $700.00. I paid $450.00 for it with a set of Ramps and it's being delivered today by the previous owner.
Not so sure yet on how many belts there are in total but one of the belts has numbers printed on it so that should be fine to match up. It appears to have been fitted with a new engine at some stage, a Briggs & Straton 17.5HP ELS500 and the engine runs perfectly.
It's some kind of chain & sprocket drive to a simple (hopefully) gearbox. Everything was too slack to actually drive it yesterday but I bought it anyway, even it it's a project to get back to a usable stage.
So it will be a strip down and rebuild to get it running I think.. Luckily for me I have retired as a motor mechanic and have nothing but time on my hands.. What I can't buy as a genuine part I can adapt or remake...
If anyone can shed more light on this, I'd appreciate it..
Cheers
steve
