It's not complicated. There is a tin cover over the transmission. Remove four bolts and the cover. This will expose the rod and clevis that needs to be adjusted. Remove the pin, unscrew the clevis a couple turns at a time until you achieve an inch or so of free play on the pedal. If that solves your problem, then you're good for a while. If you still have clutch problems, adjustment may not be the answer, so maybe you should plan on a clutch replacement.