How do you repair 4G15 automatic choke?

I suspect my problem is the same.

My first course of action will be to use carburetor cleaner (aerosol spray) on the outside to get the springs really clean. Then lightly grease the springs.

If still an issue, will clean all hoses one by one with same cleaner.

Last resort the choke itself. If cleaning it and its hoses doesn't rectify the problem, a new choke housing will need to be bought. The 4G15 carby apparently has a wax pellet system. Cold engine= solid wax restricting air flow making the mixture rich.

As the engine warms up, heat is delivered to the choke housing, the wax melts and allows full air mixing (in accordance with air/fuel ratio adjuster position).