Adjusting the idle and handlebar size??

[Flash105]

Just picked up my bike after it spending 9 months in the shop!!!!   The idle is high and I need to know how to adjust that??  Also is the handlebars 1 inch in diameter??  Thanks for the help..

[circa1968]

4 hours ago, Flash105 said:

Just picked up my bike after it spending 9 months in the shop!!!!   The idle is high and I need to know how to adjust that?? 

https://www.venturerider.org/manuals/RSVservice.pdf

See page 3-16.  The adjusting screw is on the right (brake) side, just below the tank.