Adjusting the main jet affects the air-fuel mixture at high speeds:
The carburetor on the Suzuki LT-Z50 is located on the side of the engine, near the air filter. It's held in place by a bracket and two screws. suzuki lt z50 carburetor adjustment
Here are the specifications for the Suzuki LT-Z50 carburetor: Adjusting the main jet affects the air-fuel mixture
Adjusting the pilot jet affects the air-fuel mixture at low speeds: suzuki lt z50 carburetor adjustment