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Discussion Starter · #1 · (Edited)
Hi there

My name is Pedro and I'm from Portugal. I've just bought my very first motorcycle - a 1971 CB250 K3 - for a reasonably cheap price, but with all things cheap, it's got issues.

Land vehicle Vehicle Motorcycle Motor vehicle Car

The bike starts and runs quite well, but it doesn't drive: I can't use the clutch to change gears. When I squeeze the lever and the cable is pulled, the mechanism inside (parts 6-10) pushes the sprocket cover outwards, not activating the clutch. This happens because there are two screws missing from the bottom on the cover (#16 on the diagram).

View attachment 195994

Upon close inspection, I now realize that the previous owner welded the shifter joint directly to the spindle (!!) and now I can't take the cover off to see what's wrong apart from the missing screws.

Pipe Auto part Fuel line Wire Engine

Does anyone have any advice on how to approach this without killing the spindle?

Thank you!
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