Yamaha motorcycle service manuals, parts manuals and technical specifications. ¶In my surfing over the web I have run across a number of sites which have parts and/or shop manuals. Here is a list. I do not host most of these, they are just links to other web sites.. Purchase the Kuryakyn Mechanical Throttle Cruise Assist at J&P Cycles, your source for aftermarket motorcycle parts and accessories, with free everyday tech support. Get free shipping, 4% cashback and 10% off select brands with a Gold Club membership when you get a Kuryakyn Mechanical Throttle Cruise Assist (part number 6285) from J&P Cycles..