I could really use some advice on this issue. It is also posted on the other Q&A part of the forum, but have had limited replies.
I have run into a problem with the throttle. All this is done with engine off. Bike is not running. When I twist the throttle grip and just before WOT, I feel a catch. Then it does not return to closed without assistance. I can hear a noise and then once i trwist closed past the catch point it returns to closed without further assistance. I have a short video from my iphone (.mov format) that shows the carbs for 1 and 2 cyl. If you look closely you can see that the #2 actually move up(open) slightly more than number one. There is also a little loose play in the number 2. Meaning if I push on the brass colored nut on number one there is almost no wiggle or play. If I do same on #2, I can move it up and down slightly.
I disconnected the throttle cables. The throttle grip and cables work very smoothly so the issue is in the carb throttle mechanism or internal (oh man, I hope not internal....)
So if I operate the throttle cam by hand, I still get the same "hitch" or catch or binding. It really seems like it is happening somewhere between #1 and #2 carbs. It is so strong that the return spring can not immediately return to closed. With a little assistance or just time, it will push through the catch and back to closed.
Any ideas on cause or suggestions how to trouble shoot this further. I am dreading pulling carbs back off this bike as I was so damn close to hooking up gas and giving it a try, but this is not safe as it is.
attaching vidoe again. This was taken when the throttle cables were attached, but same issue happens without cables attached. It is just wicked hard to open the throttle due to the spring force.
Ok, so I dont seem to be able to embed the video. So first question is how do I attach or post a .mov file?
http://youtu.be/eaBkxvjfh_0