1983 Yamaha 30EN Outboards Service Manual, Page 154Get this manual
9 Install each switch and buzzer into the control box and secu re each of them with nut
Install the spring detent roller, and retainer and secure them with the screw
For easy installation, attach the spring to the roller first
Insert the choke switch lock washer lobe into the hole in the control box
1210I nstall the free acceleration lever and free acceleration arm to the back plate and secure them with the screws