It's pretty simple to do.
remove the right side cover on the engine.
you will see the clutch and pressure plate(twords the rear of the engine) and the idler gear (towards the front of the engine).
remove the set screw in the center of the pressure plate that secures the flower nut that's in the center.
now, remove the flowernut by turning it counter clockwise.
try to count the number of turns it takes to remove it because you will want to tighten it back up the same number of turns (or close) when you put it back together.
after you get the flower nut off, the pressure plate will slide off.
under the pressure plate, you will see the clutch pads.
just pull them out of their holes, and install the new ones.
now put the pressure plate back on, screw the flower nut back on approx. the same amount of turns that it took to remove it. put the set screw back in and you're done.
you will have to take it for a test ride to see if the adjustment is close or if it needs to be tweaked.
you can make minor clutch adjustments at the clutch arm & cable on the left side, or you can screw the flower nut in or out(depending on if the clutch is slipping or not disengaging). if it;s slipping, tscrew the flower nut counter clockwise (tighten it) if the clutch won't disengage, screw the flower nut clockwise (loosen it). it usually only takes 1/4 of a turn to the flower nut to make a significant difference in the clutch.
If you get the flower nut put back on close to where it originally was, you shoudl be fine and you may have to just make a minor adjustment at the clutch arm & cable to make up for the new, thicker clutch pads.
also, when you take it apart, make sure that there's no oil or grease on the clutch, pressure plate or pads.
sometimes if the inner crank seal is leaking, it will allow fuel and oil to leak out and get into the clutch, which will cause it to slip like crazy.
