Open up the Toro 265's fuel tank and drain any old or bad gas, which can gum up fuel system parts and cause many starting problems. Reach into the fuel tank with the metal hook and pry out the fuel filter, attached to the fuel line. Pull the fuel filter off the fuel line.
Look for any cracks in the plastic fuel hose, and if it looks degraded, replace it. Look for any dirt or debris that might be floating in the tank. Wipe out the tank with the rag, if necessary. Press the nozzle of the new filter into the gas line and drop the line to the bottom of the tank.
Unscrew the air filter box and remove it from the engine. Open the box up and pull out the foam pad. Wipe all dirt, oil and debris from the box, cover and area around the air filter. Replace the air filter if it's black or covered in debris.
Unhinge the rubber boot on the spark plug and unscrew the spark plug with the socket wrench and spark plug socket. Change to a new spark plug if the old one is black, has a bent tip or looks damaged.
Reconnect the spark plug wire and fill the fuel tank with the fresh fuel. Try to restart the engine.