If by breakdown sheet you mean exploded diagram, BikeBandit.com has what you are looking for.
how to set Yamaha pw80 carburetor
Not shure
u can do 40 with a pw80
yes they are all the same
well a pw80 goes 74kph and a kx65 goes 110kph
All Yamaha PW80 s have 3 semi automatic gears ( no clutch lever etc )
It all depends on condition, if its a nice clean pw80 about 800-1200. hope this helped
They are pretty simple, wiring wise. Here is a diagram from a 2001. http://www.weeksmotorcycle.com/pw80-wiring-diagrams.html
One may buy a used Yamaha PW80 from Cycle Trader. These are private sales but one may often get a better deal this way. One may also use Kijiji to purchase a PW80.
41 mph
Sign up at myyamaha.com and download the service data sheet for your bike which lists the spark plug type and gap. https://www.yamaha-motor.com/sport/myyamaha/login/L3Nwb3J0L215eWFtYWhhL2hvbWUuYXNweA==/starthere.aspx
http://safemanuals.com/user-guide-instructions-owner-manual/YAMAHA/PW80-2003-_E