1984 Iseki tu1600 air flow sensor

[Eggsiam]

Somebody helped me out ab a week ago with my dash light problem. Air flow sensor light won’t turn off. i can’t find one anywhere to replace the original, is it possible to buy some air flow sensor cleaner and clean it ?? Will that work?? With the air filter cleaned, and taking it out or leaving it in with the engine running for a few mins, the light still won’t go off. I was thinking of buying a can of mass air flow sensor cleaner and trying that. Just want to make sure I won’t make it any worse, or hurt something else.
appre I ate any advice someone might have. Thanks