Charlotte Budd

We have an old model plane which we’ve began to try to repair. We can’t find any kind of handbook for it online - would anyone have any ideas for a repair guide or any other documentation? It’s labelled as ‘Olympian 40’ and ‘Dave Smith Model.’ We’re all complete beginners to trying to repair this, and can’t find anything online for the specific plane we have - we’ve likely had it since around 2002. Any help would be great!