Please note that the PICTURE UPLOAD function is not working. The iBoats Forum Moderators are working with the system administration folks at the parent company to get the issue resolved. This happened about a year ago and here we are again. In the meantime you can post photos as links to a picture hosting site of your choice. We are sorry about the inconvenience and will advise when the issue is resolved. Thank you for your patience.
You only need it if your carb has an electric choke. If you have the divorced stove style choke coil that bolts onto the intake you need to leave the restrictor out so exhaust gas will warm that area.