Manual CCTs will have a large bolt with a locknut poking out
http://www.vtr1000.org/phpBB3/viewtopic ... 16&t=22720
OEM Tensioner will look like this:

and the front cylinder one is hidden by frame, tank and airbox
Though if it has had the stopper failsafe mod done you wouldn't be able to tell with taking it apart. Also look carefully as bazza here converts OEM auto tensioners to fully manual tensioners by gutting the innards and putting a coach bolt t'up the middle.
As for R/R this is an early self-cooking unfinned version
If in doubt about any of these notorious components - replace pronto or risk inconvenient breakdowns with potentially expensive repairs,