how properly tension your chain, how to replace or re-grease bearings, chain/sprocket inspection and replacement, the re-skinning a seat deal, (im very f-in good at it), kleaning and oiling air-filters, brake replacements, carb cleaning and tuning, setting the toe in and adjusting the camber/caster if you have aftermarket a-arms, swing arm pivot bolt preventive maintainence, steering stem bushing replacement, how to properly adjust cables (this is a big one even for those who think they know it all) carb swaps and set-ups, selecting the right whatever for whatever, it never hurts to honestly do it all for those who know little to nothing, nobody taught me anything about quads, i went through the school of novice wrenches hard knocks and continuous part replacement, but im pretty good now, unfortuantely i dont have a quad at the moment to help out with the write ups on how tos, or else i would cover just about everything i mentioned
