Dano426 over on All Things Moto! posted a link to download Yamaha Motorcycle and Scooter owners manuals in PDF format. I thought this should be shared here as well, since I know there are a lot of bike owners out there that for some reason didn’t come with the owners manual when purchased 2nd hand.
This should help with getting the specifications for adjusting valves and other stuff for you Yamaha Motorcycle or Scooter.
Yamaha Motorcycle and Scooter Owners Manuals