To remove the clutch you can lay the engine on its side, crank up. Find a bolt that thread into the clutch. Find out how deep it will go before it bottoms out. Mark it. Fill the crank and clutch hole half of the bolt depth with very thick gear oil, like 140W, even use it cold so it doesn't leak past the thread. Now just screw in the bolt to compress the oil until the clutch pops off and sprays oil everywhere
Let us know how it turns out for you.
Danford1