Thanks guys for the replies, really appreciate them.

I think I'll stick with the current engine and shaft and see how the new key and clutch half fits together before spending any more money. Would like to completely restore my mower one day but a bit busy at the moment.

I'll grab all the mentioned bits and will let you know how I go once I'm ready to line things up and mount the engine and housing back together.

Also my mate was wanting to know, regarding Chonda engines, we've heard that the Loncin are the way to go? Can we get those $129 shipped to Perth? I couldn't see the brand in the Outdoorking shop.

Thanks again,
Roverdude45