After a long winter of sitting, a Toro lawn mower engine's carburetor is likely to be very clogged up with gummy, old gas. Cleaning the carburetor on your Toro lawn mower before each mowing season is a good practice to prevent premature replacement of the carburetor. Cleaning the carburetor is necessary to allow proper gas flow into the mower engine.
Locate the gas tank on your Toro lawn mower. The gas hose will be clamped to the base of the gas tank and run to the side of the carburetor.
Squeeze the clamp holding the gas hose to the side of the carburetor with the pliers. Slide the clamp down the hose several inches.
Pull the hose off of the side nozzle on the carburetor with your hand. Direct the hose into the bucket to let the old gas drain out.
Spray carb cleaner into the side nozzle of the carburetor for 15 seconds. Reconnect the hose to the side of the carburetor, and slide the clamp back in place.
Unscrew the bolt on the base of the carburetor with the proper size wrench. Pull the fuel bowl off the base of the carburetor. Dump any gummy gas in the carburetor fuel bowl into the bucket.
Spray carb cleaner into the carburetor fuel bowl and on the float above the fuel bowl. Screw the fuel bowl back to the base of the carburetor tightly.