Has it been a long time since you ran it last? The clutch plates could just be stuck. Several ways to try to cure it. Rocking it back and forth in gear. If you have a lot of room, ride it around for a while with the clutch pulled in. It should eventually give way. Sometimes a wheelie will help speed it up. Or buy a few gaskets and take it apart.
I am not a fan of ready mixed coolant. Total rip off, since it is at least 40% water. And water is still the best coolant. Mix it 30 % anti freeze in the summer and 50% winter.
Leave the bleed nipple closed and loosen the hose at the m/c and pump to see if any fluid is moving.
PS, remove the lever and just use a phillips or round headed hex to pump.
You did put it together in nuetral? You should be able to select gears by rotating the countet shaft sprocket. When the basket is rotated backwards is it the Kick start thay is stopping it?
Are you sure the stem is not pulling out of the lower bracket. What you are describing used to happen on the Gasser`s all the time. Which were broken. Good luck.
Find a rubber boot for the air box. A sock is not going to make it run better, in fact probably worse.
Reproduction. https://www.ebay.com/i/112480199125?chn=ps
Just to clarify it is not a torx and you should strip it down to make it easier and to clean the crap that is in the spring. By the way the center bolt should be hollow. I would not use loctite.
No, the center cases have to be opened. Top ends do not vibrate. Since you had a loose needle bearing, I would do rod and mains. The bike is 44 years old. The only reason I would take the time to do it is it could go another 40.
