I have had some issues with my 78 Cb 550 stalling out coming to a stop, after the bike has been out riding around for 30min. I’m assuming a vacuum leak. Which led me to this video
So I took a look at my carbs and sure enough the felt bushings are not present. So I made my own bushings in my shop. I made 4, 0.125” thick brass bushings with a 0.100” depth recess to hold springs in place between the two bushings against O rings opposite of each other on the choke rod. The spring is 0.300” OD with 0.032” thick stainless steel wire, 1.25” length, 6lb spring tension. I have not had the bike out on the street yet since Ohio likes to bring snow and cold weather. Along with numerous projects on the bike that I need to complete for spring riding. Hope this cures the air/vacuum leak on the carbs and hope this may help other riders.
