Slide the choke lever into the closed position. Unscrew the wing nut on the side of the air filter cover with your fingers.
Lift the air filter cover off and the air filter element out of the box. Brush off the area around the air filter box, carburetor, box cover and inside the box.
Wipe off the area around the fuel cap. Unscrew the cap and pour the remaining fuel into the fuel container. Lift out the fuel filter element using the metal hook. Pull the old filter off the fuel line and press the new filter into the fuel hose. Refill the Echo with freshly mixed fuel.
Lift the rubber boot off the end of the spark plug. Unscrew the spark plug using the socket wrench and spark plug socket. Screw new spark plug into the cylinder if the old plug is black, worn or rounded off. Refit the spark plug boot.
Unscrew the muffler cover from the front of the muffler. Remove the cover and gasket and take the spark arrestor screen out of the muffler. Clean the carbon deposits on the screen using the brush.