If you are going to do it on the frame then remove the belts so they are not pulling on the crankshaft which will cause alignment problems on re-assembly. Just hope you are good at jigsaw puzzles.
As Star says
I do buckets in the mower belts removed .
A very quick job even more so because all the bolts face up so are easy to get at and all of them take a 10mm wrench / socket.
If you are going to do it on the frame then remove the belts so they are not pulling on the crankshaft which will cause alignment problems on re-assembly. Just hope you are good at jigsaw puzzles.