Most mechanics, whether they work on cars, motorcycles or lawn mowers will tell you that many things are very common among engines regardless of brand. One of my good friends used to be a mechanic for a Kawasaki/Suzuki dealer and he's comfortable doing nearly all things, but suggests I get hold of a Triumph shop manual before he would tackle something like valve adjustments. I'll be buying one long before it's time for him to get to the valves.
No telling whether yours would need adjustments just yet since the manual says you can go to 12000 miles before one is prescribed.
No question that a 9 year old bike with only 7700 miles on it was neglected at least a bit, so I'd change out the fork oil, get the chain cleaned and adjusted, have the air filter and brake fluid at least checked.
