I think you’ll need to use a screw driver to hold the rear brake lever out of the way, but just the cover needs removal not the side case. Remember to check you tube for vids. Katsumi mr duhfactor has a slipping clutch vid changing out clutch springs to heavier springs

Yeah, just remove the clutch cover. On the other side you’ll have to remove the inspection plug to get a socket in there to hold the flywheel bolt to keep everything from spinning as your try to loosen the clutch hub nut.

I’d grab an a klx membership from cyclepedia.com if you have the spare cash. It’s great for walking you through stuff like this. It’s all I referenced the first time I put in a new clutch.

Iirc the ebc clutch plates I installed didn’t reuse the judder spring. Since it has less surface friction area compared to the other plates I didn’t give it a thought.
I always wondered what exactly that contraption actually did

A few years back for sure. That was one long thread!

https://www.youtube.com/watch?v=C7cl2vgUA_4&t=1s

heres another which involves installing stronger Barnett clutch springs