I don't have expreiance with 1100's, I own a 950.
But with any used bike the things to check are the most obvious,
and probably the most important things. Like ask if he could have
the engine cold when you go to see it, then see how it starts, hear it run, even ask him to ride it up and down the street while you're there,or better yet, let you ride it, make sure no oil leaks or gas leaks, check the oil, see if it's clean, make sure the wheels and tires are true, and in good shape, check the frame and other parts for damage, look for loose wires, make sure all lights and signals work,
and check the brakes. If all that checks out good, then make a deal.
Now 2010 V STAR 950 T
Former bikes were
1982 Yamaha XJ650 Maxim
1977 Harley Iron Head Sportster
1970 Triumph 500 Hard Tail Chopper
4 wheels move the body, 2 wheels move the soul