Carb float height

Hi Paul, you've still got it then? Hope things are ok with you. The early bikes had a adjustable floats, with a metal 'tang' for the jet that could be bent to raise or lower the jet. Later models went to an all plastic float which couldn't be adjusted. The float height should be 15.5mm. As Buster said, Wazzbo's 'Beginner Guide' is a good starting place for any work on SD carbs - just a few more posts here will get you there, no need for them to make any sense In the meantime, try holding the carb on its side then tilting it till the float just closes the needle valve without compressing the sprung pin on top of it, then measure the height from the float bowl face to the bottom edge of the float

Yep, Gill's taken a liking to them and has 2 now, an RSA & an electric start RSD. It's worth having a look at the float valves on your SD, they can give problems, especially when the bikes been unused for a while. A cotton bud & solvol are good for this. Sometimes, if it is the float valve, tapping the side of the carb(s) with a spanner or something can seat it & stop the leak. At least in this case, you would know it's the valve at fault. There's been a few people on here who have had problems with corrosion of the brass overflow tube causing a continuous leak. Good luck!