I have a 1968 60/2 US with 30,000 miles. when tuned, it runs smoothly..I have found that if I don't run it every week or 10 days, it will increasingly run rough with the right cylinder not running smoothly .. the right carb has a tendency to hang up and will simply pour gas out when the fuel petcock is turned on. I took the top off of the float bowl chamber and lifted out the float. When I shook it , it did not appear to have any gas inside. There is a metal rod sticking out of the top of the float with a milled "notch "around the shaft about 4mm from the top of the float. A metal "donut" slipped down the shaft and settles into this notch.
However the donut" will move up or down the rod fairly easily. I thought this might keep the float too low and causing the fuel flooding? I pulled the left float from the carb and noted a "top hat" arrangement ( essentially the metal donut with a short 3mm sheeve attached to it ) on the rod that fit in the notch on the rod, preventing the float from being held down and allowing the fuel to pour out.
I fabricated a 3mm in length, steel tube to fit between the "donut" and the top of the float to stop the right float from sticking. It seems to work somewhat , but it still doesn't run smoothly.
The bike had a tune-up less than 500 miles ago about 12 months ago..so I don't think the adjustments are out of wack yet.. Any suggestions ?
However the donut" will move up or down the rod fairly easily. I thought this might keep the float too low and causing the fuel flooding? I pulled the left float from the carb and noted a "top hat" arrangement ( essentially the metal donut with a short 3mm sheeve attached to it ) on the rod that fit in the notch on the rod, preventing the float from being held down and allowing the fuel to pour out.
I fabricated a 3mm in length, steel tube to fit between the "donut" and the top of the float to stop the right float from sticking. It seems to work somewhat , but it still doesn't run smoothly.
The bike had a tune-up less than 500 miles ago about 12 months ago..so I don't think the adjustments are out of wack yet.. Any suggestions ?