TLC on the ISO

Yesterday I took the time to give the ISO some needed TLC. A couple of weeks ago, on a drive the rearwheel looked up an was totally stuck. I knew that it was the gearbox or the primary drive that needed attention. This was also the reason that I started the operation disassembling the primary chainbox and found that the nut, that holds the sprocket was broken loose and has stuck between the housing and rear-sprocket.

This is how it looked

  I removed the damage nut, Found a spare one from my spare engine and assembled the engine again and now it running. but after it has been parked for a couple of days the engine is running on a fat mixture of of petrol so some tuning is required. Old Italian bikes is difficult ..