There are 3 possible adjustments. Sounds like you have #1 under control. Then if needed, get some play or slack in the lever using the locknut/adjuster at the other end of the cable. To do this you just slide the rubber boot up the cable to get to it.
Lastly, you remove the small cover on the side of the engine. It's the small (3 inches across, maybe) round one with two bolts. Hold the screw still with a flat blade screwdriver and then loosen the nut (10 or 12mm - I forget which). Now, unscrew the screw a few turns. Slowly screw it back in until, by the book, you meet high resistance and turn it back 1/4 - 1/2 turn. I find I get a better result if I turn it in until I meet ANY resistance and then back it out. Now, hold the screw still with the driver while you retighten the locknut.
Did that make any more sense than the manual? Hope so. Good luck!