on the web.
search Mulligans transmission.
If you are going to dabble in mower repairs then you need to be able to search out information.
I found them from Australia so you should be able to do it easier from there.
Untill I found a tranny repair workshop locally they were where I got all my parts from.
The local franchise warehouses seem to run on zero stock.
Everything was 2 to 3 weeks, which is the same time Mulligans take to get them to me & Mulligans were around 1/2 the local price.
They treated me well & gave honest advice where as the local suppliers treated me like I had the plague.