I bought the motorcycle a year ago in a non-working condition for repair as a hobby.
The previous owner said the problem was engine overheating.
This year, I've cleaned the carburetors, removed rust and oxidation, then touched up the paint, repaired critically damaged plastic, removed the faulty security system and repaired the wiring, bought a new battery, replaced the fork seals, and added new oil.
During the repair, the following problems were discovered: the fuel pump isn't working with the fuel pump relay (only bypassing it), the clutch cable is damaged (replacement is recommended), the carburetor seals should be replaced (they've become inelastic), and the thermostat is stuck.
(The motorcycle can be used without it; it's an unnecessary part.)
And the main problem I discovered was a gas leak into the cooling system (the cylinder head gasket or cylinder head needs to be replaced).
I'm not in the mood to deal with it yet, so I'm selling it, but I'm not in a rush.
I'm adding another engine, two wheels, and a new front tire to the motorcycle.