How do you put together the vitos twist throttle. I have the throttle kit and the tors elimination idle kit. What parts do you have to use from the stock one.
This should be a pretty straightforward install. You can ditch the entire thumb throttle, cable, and TORS carburetor cap assembly. The only stock parts that you'll need to save will be the throttle slide, slide spring, and slide clip hanging from the bottom of the carburetor cap. Take the carb. cap off, compress the spring with your fingers, and gently nudge the clip off. The throttle slide will slip right off the cable...
To install the twist throttle on the bike, all you need to do is scuff the paint off the 'bars on the RH side, where the twist trottle goes (to keep it from binding), slide the throttle assembly on, attach the throttle cable, and fit a new grip. A stock handlebar grip may do temporarily (I got it to work on my 'Shee), but I'd recommend getting a set of handlebar grips designed for use with a twist throttle. This way, you'll be sure that the grip won't fit so tightly that the throttle winds up sticking.
Here's how to do the carburetor cap: http://www.blasterforum.com/do-yourself-20/aftermarket-carburetor-cap-idle-screw-install-22174/