Hi Guys, new to this forum. I recently started working on a 77 103 that my wife dragged home 15 years ago so I know nothing of it's history. I did find a bunch of half assed "repairs" that I've been making right. The current problem is the throttle cable to carb connection. The throttle control was broken, brake lever gone, cables in bad shape so I replaced most of the stuff with new, but the Magura housing was a used part.
So now, when I try to twist the throttle, I only get, maybe, 20 degrees of rotation and it gets tight. If I unhook the cable at the carb (had the carb out for a good cleaning, the needle and piston (that's what it's called in an SU carb anyway) move up and spring back down freely from the wire hooked under the needle that crosses over the carb to the throttle cable side. With the carb disconnected, the cable moves freely as well, full twist action, 100 or so degrees of rotation. When they're connected, I can get full rotation only if I push the lever (U shaped wire) while twisting the throttle.
The cable is connected to the wire by a cable stop that just sits in the U shaped hook at the end of the wire (the way I found it). To me, it seems like as the cable gets pulled, it rides up the U and makes the angle to the cable housing end too sharp causing the drag. Am I missing something that hooks on the bottom of the U so the cable pulls straight? I'm attaching a couple of pictures. Ignore the nut over the cable, that was just used as a spacer between the wire clamp and the U to see if I could keep the cable from riding up. It's just hanging on the slack part of the cable now but the condition existed before I put that there, just to lazy to take it off and reassemble for this picture. Does anyone have a close up of how this cable attaches? Any ideas?