Remove the air cleaner so you can see the carburetor linkage and find the throttle cable. What is the engine model number> Wildcat 210000 does not come up under search. Here is a basic Briggs single cylinder throttle setup.
Does not help. Briggs engine model will be example 28B702-0123-B1 . Did you look at the link I sent on the linkage?
The cable clamps at the bottom of the outer casing. loosen the clamp, and move the cable to give it more throw, it likley has slipped under the clamp from not being tight enough. Link I sent should be your exact model.
Did you see the cable clamp and check the cable ?
did you try moving the cable under the clamp, to give it more travel?
You would have to loosen the clamp with a nut driver!
Goof job! Thank for the relpy!