How do you check the fuel system on a js20 mower?

To check the fuel system on a JS20 mower, start by inspecting the fuel tank for adequate fuel levels and ensuring the fuel is clean and fresh. Next, examine the fuel lines for any signs of cracks or leaks, and check the fuel filter for clogs. Finally, inspect the carburetor for proper function and cleanliness, and ensure the fuel shut-off valve is open if applicable.