Be careful with the gasket, it might stick a little bit.
You'll need to block the gears rotation, for this, use a piece of copper wire so you don't damage the teeth.
A screwdriver alone might not be enough, use a wrench to help.
Screw it by hand on the gear (it's threaded inside)
Then use a wrench to unscrew the whole, the gear should slowly pop out as you turn the wrench.
Once the gear is removed, remove the pin on the axle too using small pliers.
You'll have to grind them to allow a perfect clearance with the side cover.
Be sure to mask with tape the center of the clutch cover to prevent any metal particles to get inside the clutch.
I reused the same 3 bolts for the back but i used the 2 that come with the clutch kit for the front (they're shorter)
Don't forget the washers.
Rotate the engine to be sure the spacing is good.
Put your home made gaskets in place using the remaining screws (2 long ones at the front, 2 short ones at the back).
You're ready to go !
No more messing wth the clutch lever (you might want to get rid of the clutch lever on the left side of the engine).