I bleed some 0.5 litres of oil from the engine and on the sightglass it is just under the top line. The shifting improved greatly. It is almost feather light although I still somewhat struggle with finding neutral. Perhaps it just takes practice.
Clutch cable is replaced. When adjusting free play I noticed that the rod (the actuator on the clutch case) is on lower indicator mark (there are two). Does this mean the clutch is almost worn out?
I've read that you can buy a longer axle that fits on the clutch basket to extend its life. But is it complicated to replace?
Tocsik wrote on 03/05/20 at 15:58:02:
Check that through bolt for the head before digging too deep. You'll see it up inside the exhaust outlet. Put a small wrench on there and give it just a little pressure. This stopped my oil seep without even needing to remove the nut, clean the threads and apply RTV. But do that if simply tightening a little doesn't do the trick.
On the shifting issue, also check the rods that connect the lever to the engine case. If anything gets bent, it could cause shifting issues.
I think I understand now. It is the one on the left-forward side of the engine. I can see the head under one of the cooling fins. I will take care of it when I replace spark plug tomorrow.
I cleaned carburetor and it was mostly spotless. The previous owner did take some care of the bike. But he was a strong armed man because every once in a while I find stripped screws. I replaced some on the carb.
I tried changing brake pads but there was also a stripped screw on the pin that holds pads in place. I will have to drill through it. :'(